Manchester United manager Sir Alex Ferguson fears that veteran winger Ryan Giggs will miss Tuesday's Champions League clash with Lyon because of a thigh problem.
The former Wales international picked up the injury in the first leg of the last 16 encounter in France and is struggling to be fit for the Old Trafford return with the tie evenly poised at 1-1.
Ferguson confirmed: "The one doubt is Ryan Giggs. The blow he took in the Lyon away game has proved a bit more complicated than we first thought.
"It's held him back from training as much as we'd like. He did a bit on Monday morning, and on Saturday morning - he had Sunday off for treatment - so he is a doubt."
Meanwhile, Ferguson has hailed Carlos Tevez's impact on the United side since the Argentinian's arrival at the club last August.
The 24-year-old has scored 15 goals in 33 appearances for his new club already this season, and Ferguson has been impressed by the former West Ham United's displays.
"The goal he got in Lyon was obviously really important to us, as were his goals at Liverpool, Tottenham and at home to Chelsea right on half-time when we were searching for that first goal," said the veteran United boss.
"He's proving to be an important player for us, no question. He's now on 15 goals. I think that's a great return in his first season with us so we're delighted with him."