Second-placed Arsenal hope to have four players return from injury for Sunday's clash with Liverpool.
Goalkeeper Wojciech Szczesny has recovered from the finger injury picked up against Barcelona in the Champions League.
"We still have some tests to make but Wojciech is back in full training so it could be Szczesny (to start)," said Arsene Wenger on the club's website.
Brazilians Alex and Ramires will miss Chelsea's trip to West Bromwich Albion on Saturday with minor injuries, manager Carlo Ancelotti said.
"We have two little problems with Alex and Ramires, they will not be involved in the game tomorrow," Ancelotti said on the club's website.
"They have a little muscle problem, so for two or three days they have to stay off and they come back for Birmingham (on Wednesday)."
Centre-back Alex, who only returned this month from a long-term knee injury, came off late in Tuesday's Champions League defeat by Manchester United, while midfielder Ramires was sent off for a second yellow card in that game.
"We are hoping with extensive treatment from the medical and physio staff that we can get him at least on the training pitch on Friday. So he is a doubt," said Rovers boss Steve Kean on club website.
Blackpool midfielder David Vaughan will miss his side's match against bottom club Wigan Athletic on Saturday with a hip injury.
"There's slight muscle damage and there's a fear that it may have pulled a piece of bone off his hip," manager Ian Holloway told the club's website.
