Arsenal will have to produce the biggest second leg comeback in a Champions League knockout tie to avoid a seventh successive exit at the last 16 stage when they host Bayern Munich on Tuesday.
The Portuguese admitted he had over-stretched himself after having knee problems at the back end of the last season which he carried into the World Cup and then suffered a hamstring injury at the start of this campaign.
A much-changed Real Madrid ground out a 2-0 victory at third-tier Fuenlabrada in their King's Cup last-32 first leg on Thursday, needing two dubious penalties to break down their stubborn hosts as both sides finished with 10 men.
Barcelona closed in on the La Liga title by thrashing local rivals Espanyol 5-0 on Sunday as Atletico Madrid dropped out of the race after losing 2-1 at Levante and Real Madrid beat Valencia 3-2.
Lionel Messi came off the bench to preserve Barcelona's unbeaten run in La Liga with a sensational late equaliser in a thrilling 2-2 draw at Sevilla on Saturday as the runaway leaders came back from two goals down in the space of a minute.
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Valencia climbed above Atletico Madrid and Sevilla into third in La Liga when Alvaro Negredo came off the bench to score a late winner in a 3-2 home victory over his former club Almeria on Saturday.
Antoine Griezmann and Yannick Carrasco each conjured moments of magic as Atletico Madrid recaptured top spot in La Liga from Barcelona with a hard-fought 2-0 victory at Celta Vigo on Sunday.
Cristiano Ronaldo struck twice as leaders Real Madrid subdued Eibar 4-0 on Saturday while Lionel Messi set a La Liga record of 253 goals with a hat-trick in second-placed Barcelona's 5-1 rout of Sevilla.
Real Madrid closed to within two points of La Liga leaders Barcelona after demolishing nine-man Rayo Vallecano 10-2 while Atletico Madrid missed a chance to seize top spot outright by losing 1-0 at Malaga.
Zlatan Ibrahimovic bagging four goals, while Juventus and Bayern Munich preserved their leads and FA Cup holders Arsenal were dumped out of the competition.
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Real Madrid winger Gareth Bale answered his critics in emphatic style.
Lionel Messi marked his 300th La Liga appearance with a record-equalling hat-trick and an assist for Neymar as Barcelona stayed hard on the heels of leaders Real Madrid with a 5-0 romp at home to Levante on Sunday.
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Chelsea moved within touching distance of a first Premier League title in five years with a 1-0 win over Manchester United while Lionel Messi reached a landmark with his 400th career goal for La Liga leaders Barcelona.
Manchester United captain Wayne Rooney did not have the faintest idea who Anthony Martial was when the Monaco forward was linked with a move to Old Trafford earlier this week, according to team mate Morgan Schneiderlin.
La Liga champions Real Madrid beat Getafe 3-1 on Saturday with a goal from Gareth Bale and two strikes from Cristiano Ronaldo to go 12 points behind leaders Barcelona and warm up for next week's Champions League game at Paris St Germain.
Robert Lewandowski scored a brilliant free kick to give Bayern Munich a 1-0 win over Atletico Madrid in their last Champions League Group D outing on Tuesday, ending the 100 percent record of their opponents. The Poland international curled the ball over the wall and into the corner of the net in the 28th minute but the goal had no impact on the final standings with Atletico guaranteed top spot and Bayern in second place.
Chelsea returned to their early-season form to open up a five-point lead in the Premier League, Cristiano Ronaldo and Lionel Messi continued to make mincemeat of La Liga defences and Juventus extended their lead in Serie A. In France, Olympique Lyonnais retained top spot with a 2-0 win at RC Lens.
A senseless pitch invasion by Serbian fans in last month's Euro 2016 home qualifier against Albania has cost the Balkan nation dearly and the team fear the ramifications ahead of Friday's match against Denmark, Nemanja Matic said.
Atletico Madrid got their La Liga campaign up and running in less than convincing fashion when Antoine Griezmann's deflected free kick secured an edgy 1-0 win at home to promoted Las Palmas on Saturday.
Manchester United dropped further down the table after losing 5-3 against newcomers Leicester City. Barcelona and Real Madrid scored 13 goals between them during a memorable La Liga weekend, when Cristiano Ronaldo netted a hat-trick.
US Open champions Marin Cilic and Serena Williams kicked off their China Open campaigns with straight sets victories against battling underdogs on Monday, but Rafael Nadal suffered defeat in a rare doubles outing on his return from injury.