Brazilian full-back Rafael is the only doubt for Manchester United ahead of Tuesday's Champions League quarter-final, second-leg clash with Chelsea.Although declared fit on Saturday, Rafael was restricted to running rather than ball work with the rest of the squad in training on Monday. [LNB]He was carried off in the first-leg victory at Stamford Bridge last week. [LNB]Chelsea manager Carlo Ancelotti, meanwhile, has a fully-fit squad for the first time this season. [LNB]Yossi Benayoun and Alex returned from injury at the weekend, both coming on as substitutes in the home win over Wigan. [LNB]United boss Sir Alex Ferguson had said that Rafael suffered bruising but no ligament damage. [LNB]If Ferguson decides against risking the 20-year-old, fit-again John O'Shea is available for selection. The Irishman returned to the team ahead of schedule for Saturday's 2-0 victory over Fulham, after picking up a hamstring injury against Marseille in the Champions League last month. [LNB]Long-term absentee Darren Fletcher will again miss out for United, who lead 1-0. The Scotland midfielder last featured as a substitute in the defeat at Liverpool on 6 March and has been suffering from a virus. [LNB]Wayne Rooney
and Rio Ferdinand missed the visit of Fulham on Saturday because of suspension and injury respectively - but both are available for Tuesday. [LNB]Benayoun, who played 45 minutes in the 1-0 win over Wigan at the weekend, his first game since 22 September, told Chelsea's official website: "I am not ready to play 90 minutes but I will give everything for as long as I can if the manager wants me. [LNB]"I have no pain, so the only thing is the fitness," added the Israel international, who had been out with an Achilles injury and has played only four times for Chelsea since joining from Liverpool last summer. [LNB]"I did a sprint against Wigan and you think 'Oh my God' but then you recover. That is normal after nearly seven months out."