David Silva will miss three to four weeks with a knee ligament injury he suffered in Manchester City's League Cup match against Newcastle.

Silva underwent a scan on Thursday after limping off after just nine minutes of City's 2-0 defeat.

Silva will now miss some crucial games including Sunday's derby against Manchester United as well as the midweek Champions League clash against CSKA Moscow.

"David has a problem in his ligament," the City boss told reporters. "Maybe he will be out around three or four weeks so he will not be available for the derby.

"David is a very important player but we have a squad and we will have to replace him with another player."

Daniel Sturridge has said he believes his persistent injury problems could be hereditary as he faces several more weeks out with a calf strain.

Sturridge has not featured for club or country since suffering a thigh injury in England training at the beginning of September.

His uncles, Dean and Simon, were both professional footballers, while his father was a trainee at Birmingham, and he believes his current injury problems could be due to his genes.

"I play my game as best I can, but I've been unfortunate this season," he told talkSPORT. "Maybe it's my body type -- maybe it's hereditary.

"Both my uncles had injuries, and my dad had them as well. Maybe it's the Caribbean vibes, maybe I have speed but maybe it makes you more vulnerable because of the fast twitch muscles and the speed at which you're moving.

"I am vulnerable to muscle injuries. As long as I continue to work hard, everything will take care of itself."

Michael Bradley will undergo surgery on his foot to correct a nerve issue.

Bradley has had this injury for months, which impacted his play in the World Cup and in the MLS for Toronto FC.

Bradley may not play again until the Americans' January training camp, unless it is a very serious injury and he won't be back by then either.

Barcelona has denied reports that Lionel Messi received injections by rheumatologists to relieve discomfort in a heel in order to play in El Clásico on Saturday.

Messi had only one good chance in the match, which Real Madrid won 3-1.

Messi did not not train with the rest of the team on Monday.

Victor Valdés has been offered an opportunity to train with Manchester United.

Valdés remains a free agent as he recovers from a torn ACL.

Valdés has been linked to Liverpool throughout the offseason.

A statement on Manchester United’s official website read: “Valdés, a free agent, will have his recovery supervised by the United medical staff before training with the first team, as he bids to regain full fitness.”

The club did not confirm whether the player would be offered a contract.

Gareth Bale will miss Real Madrid's Champions League match on Wednesday against Liverpool, as well as El Clásico against Barcelona on Saturday.

Bale has a buttock injury that he's not fully recovered from.

Carlo Ancelotti could revert to the 4-4-2 he has been using when Bale is out of the lineup.

James Rodriguez and Isco could fit into the same team, accompanying Toni Kroos and Luka Modric in midfield.

Chelsea fears Diego Costa could be forced to miss the next three weeks of matches due to a lingering hamstring injury.

Costa will continue to be treated by Chelsea in the hope he can return quickly.

Costa has been suffering with hamstring problems since the end of last season, but played 172 minutes in Spain's Euro 2016 qualifiers against Slovakia and Luxembourg.

Thiago Alcântara has torn the ligament in his right knee again.

Thiago first tore a knee ligament in March before suffering a setback in May ahead of the World Cup.

Thiago will undergo surgery for the injury, which happened in training on Tuesday.

"What can I say?" Thiago told Bayern Munich's official website. "Of course, I am at the moment profoundly disappointed and upset. Why always me? But I will not give up. I will fight again. I'm going to get close again. And I will celebrate my comeback at Bayern."

Sporting director Mathias Sammer added: "We are all shocked and saddened by this re-injury.

"After a long time out, Thiago was so close to a comeback. But he knows that the whole of FC Bayern is there for him. We will do everything to ensure that he is healthy again and can bring us a lot of titles."

Tomas Rosicky has become the latest Arsenal player to suffer an injury while on international duty. The 34-year-old midfielder was hurt in the Czech Republic’s 2-1 win over Turkey in Istanbul last Friday and he was unable to play in his county’s 4-2 away win over Kazakhstan on Monday night.

“I couldn’t do any sharp movements, I couldn’t sprint,” Rosicky said after the match. “If I tried to play at one tempo, I wouldn’t make any difference for the team. I’ll come back to London and we’ll see. The doctor said I have something swollen between the muscles.”

Rosicky has made six appearances for Arsenal this season but only one of them has been as a starter.

Theo Walcott returned to full training with Arsenal for the first time since January when he suffered a cruciate ligament injury in his left knee.

Walcott is unlikely to start in Sunday's match against Hull.

Walcott had five goals and four assists last season in 861 total minutes in the EPL.