Porto goalkeeper Iker Casillas, who suffered a heart attack in May, has been registered by the club to play in this season's Portuguese league.
"When you see world-recognised figures like Juergen Klopp and Pep Guardiola behaving like that, it is then replicated by people in youth football and perpetuates the idea that it is OK to do it," Ref Support UK CEO Martin Cassidy said.
IMAGES from the El Clasico match played at Estadio Santiago Bernabeu in Madrid on Sunday.
Bayern edge closer to Bundesliga title after win at Arminia
A round-up of Wednesday's action in the UEFA Champions League.
A summary of Friday's action in the Premier League.
Scott McTominay's header proved decisive for Manchester United
Images from Tuesday's action in the English Premier League
"It feels like a missed chance because I felt the performances were really good and the focus and the hunger was good every single day," said England midfielder Jordan Henderson.
Europa League kings Sevilla breezed past Manchester United into the semi-finals of their favourite competition as Youssef En Nesyri scored twice
Barcelona winger Raphinha secured a 1-0 win in LaLiga for the second straight week this time at Athletic Bilbao as his side tightened their grip on top spot.
Irish Prime Minister Michael Martin was among the first to tweet his reaction.
Barcelona were held to a 0-0 home draw by Galatasaray in the first leg of their Europa League last-16 tie
A round-up of Tuesday's action in the UEFA Champions League.
Liverpool forward Sadio Mane scored his 100th goal for the club to help secure a 3-0 victory over lively Crystal Palace in the Premier League at Anfield on Saturday.
The following are three talking points from the weekend's Premier League action:
Diogo Jota and Mohamed Salah were on target as Liverpool edged Premier League strugglers Nottingham Forest 3-2.
Images from the English Premier League matches played on Saturday.
Liverpool's new striker Darwin Nunez scored a late goal on his debut as they drew first blood in this season's rivalry with Manchester City after a 3-1 win in Saturday's Community Shield.
A summary of Tuesday's action in the Premier League.
A round-up of Sunday night's matches in the Premier League.
There are great goals, lucky goals, own goals, winning goals and now, in the era of VAR, we have the 'provisional goal'.
A round-up of Wednesday's action in the UEFA Champions League.
A round-up of Tuesday's action in the UEFA Champions League.
If two or more clubs are level on points at the end of the group stage, a number of criteria will be taken into consideration to decide the qualifiers for the next round, starting with the head-to-head record among the teams in question. It then goes to superior goal difference and then goals scored in those matches.
Tottenham Hotspur and Liverpool raised the spirits with a rip-roaring 2-2 draw in a pre-Christmas Premier League classic on Sunday after a weekend marred by COVID-19 related postponements.
A summary of Sunday's action in the Premier League.
A round-up of Saturday's action in the Premier League.
Paris St Germain had a chance to extend their Ligue 1 lead to five points after RC Lens drew 1-1 at Troyes and Olympique de Marseille and Monaco shared the spoils on Saturday.
"The best team won, we struggled from the beginning and we couldn't deal with their long balls. Usually, you press the ball to win it, but this was different. They defended so deep and so well," City coach Pep Guardiola told the BBC.
Images from Copa America matches played on Monday.
Alaba strike on Clasico debut gives Real Madrid 2-1 win at Barcelona.
Chelsea moved into the Premier League's top four as Mason Mount's superb first-half goal earned them a 1-0 win at champions Liverpool who suffered a club-record fifth straight home league defeat on Thursday.
New Everton boss Sean Dyche's reign began with a shock 1-0 victory over English Premier League leaders Arsenal.
City having already bagged the title and Newcastle safe, there was nothing riding on the fixture but it served up some rich entertainment
A summary of Saturday's action in LaLiga, Ligue 1 and the Bundesliga.
This was not quite Liverpool back to their best but it was an important statement of intent for Klopp's side that they will not be giving up their title without a fight.
Cristiano Ronaldo made an immediate impact on his return from a COVID-19 infection on Sunday, scoring three minutes after coming on as a substitute before converting a penalty to lead Juventus to a 4-1 Serie A win at Spezia.
Here is what you need to know about their route to the final
Hamilton did not specify any incidents where a biased decision had gone against him.