The former world number one said he had an honest conversation with Djokovic before taking up the coaching role between the end of 2013 and 2016.
Novak Djokovic enjoyed success at his own tennis centre when he won the Belgrade Open with a 6-4, 6-3 win over Slovakian Alex Molcan in Saturday's final.
Images from Day 6 of the 2021 US Open in New York on Saturday.
World number one Novak Djokovic said on Wednesday he hopes rival Roger Federer will return to competitive action soon and be able to compete with the best again after the Swiss great said he would miss the Australian Open in January.
World number one Carlos Alcaraz retired injured against Holger Rune at the Paris Masters on Friday, sending his fellow 19-year-old through to the semi-finals, while Novak Djokovic and Felix Auger-Aliassime also sealed places in the last four.
Djokovic spent much of the third-round encounter cruising on auto-pilot
Jannik Sinner has withdrawn from the Paris Games due to tonsillitis.
Also Spotted: Tom Cruise, Julia Roberts, Benedict Cumberbatch, Mark Rylance, Zendaya, Paul Mescal, Jamie Dornan...
World number one Novak Djokovic was furious with the chair umpire for not suspending play as rain trickled down during his Italian Open second-round match against American Taylor Fritz.
Novak Djokovic won a record-equalling 20th Grand Slam title by after winning this year's Wimbledon drawing level with long-time rivals Roger Federer and Rafael Nadal.
Sweltering heat gripped the second-round action at the US Open on Wednesday
Kate, Britain's Princess of Wales, arrived smiling at the Wimbledon tennis championships on Sunday to watch the men's singles final.
Novak Djokovic is bidding to win the title for the first time since 2015 and equal Roger Federer's six.
IMAGES from the Australian Open Men's semi-finals played on Friday.
Djokovic announced on Tuesday he received an exemption to play in the Grand Slam tournament in Melbourne and said he was heading to Australia.
Bidding for a record-extending ninth Australian Open title, the world number one and double-defending champion remains the runaway favourite at his favourite Grand Slam where he once remarked that he felt touched by the "divine".
Djokovic received severe backlash for organising the tournament with an audience amid the pandemic.
Novak Djokovic blamed "human error" on Wednesday for a mistake in his Australian immigration paperwork and apologised for breaking isolation for a photoshoot when he had COVID-19 last month.
Second seed Daniil Medvedev will launch his bid to win his first major title against veteran Frenchman Richard Gasquet.
Sabalenka crashed to a 6-7(5), 6-4, 6-4 defeat to Russian teenager Mirra Andreeva
World men's tennis No. 1 Novak Djokovic headed reluctantly home on Monday after being kicked out of Australia because of his COVID-19 unvaccinated status, but the government left the door open for a possible return to his favourite Grand Slam in 2023.
The 'Big Three' of men's tennis have found some "fresh energy" to thwart the charge of younger players on the tour, world number one Novak Djokovic said after setting up yet another title clash against his biggest rival against Rafael Nadal.
So Djokovic will certainly not be letting his guard slip when he plays American Denis Kudla on Friday.
IMAGES from Day 5 of the Wimbledon Championships at All England Lawn Tennis and Croquet Club on Friday.
Novak Djokovic tried his hand at cricket as he bowled and batted against Australia's star cricketer Steve Smith.
Australian Open chief Craig Tiley is confident Rafael Nadal will be at Melbourne Park for next month's Grand Slam despite testing positive for COVID-19, but he is still uncertain whether Novak Djokovic will be playing.
Nick Kyrgios is providing commentary by the court for ESPN and trading barbs with critics on social media. The Australian has not been shy to express an opinion.
Djokovic has been even more visible on social media this week as the Tokyo Olympics got under way.
'Is he serious? It's a selfish political move to gain popularity.'
Djokovic practised his serves and returns with his entourage on an empty court at Melbourne Park
Novak Djokovic could be barred from playing in the French Open as things stand now after the Sports Ministry said on Monday there would be no exemption from France's new vaccine pass law.
The Serbian's 1-6, 6-3, 6-1 defeat also ended his dream of winning an Olympic singles gold medal, the only major honour missing from his long list of accolades.
Iga Swiatek and Coco Gauff stressed the need to start matches earlier at Grand Slams
Novak Djokovic has suffered more than his fair share of heartache against Rafael Nadal at the French Open but Sunday's final offers him a chance to dethrone the claycourt king.
'007, Why not? Maybe this is the year. Seven in 17. I'm not a numerologist but it sounds good'
The 6-foot-5 frame of Matteo Berrettini will be standing in the way of Novak Djokovic's relentless pursuit of hoarding as many tennis milestones as possible when the two meet in a Wimbledon final where both men will be eyeing the record books.
Rafael Nadal said he feels sorry for Novak Djokovic after the world number one was denied entry into Australia but added that the Serb knew for months he could potentially face problems if he arrived without being vaccinated against COVID-19.
Novak Djokovic said he expects a "great battle" against Italian powerhouse Matteo Berrettini in Sunday's Wimbledon final when victory will earn the Serb a record-equalling 20th Grand Slam title.
Novak Djokovic's loss in the US Open final on Sunday denied him a calendar-year Grand Slam but the Serbian world number one said he was just happy his chase for perfection was finally over.
Novak Djokovic, who has won a record nine titles at Melbourne Park including the last three, has repeatedly declined to reveal whether he has been vaccinated against COVID-19, with Australian Open organisers Tennis Australia confirming that all players would have to be vaccinated to compete in Melbourne.