Manchester United manager Sir Alex Ferguson has hailed Antonio Valencia's return from a long-term injury.
The 25-year-old wide-man had been out of action since September following a serious ankle problem sustained during a UEFA Champions League encounter with Rangers.
Valencia, an Ecuador international, has now battled back to fitness and made a positive impact against Marseille in Europe a fortnight ago.
Ferguson believes the former Wigan midfielder will have an important role to play between now and the end of the season.
"Antonio has showed in the parts of the games he's played so far why we've missed him," the Red Devils boss told Inside United.
"He is a fantastic footballer. He came on at the right time against Marseille because Nani was starting to wilt a bit after his injury.
"His ability to get to the dead ball line is a big advantage to us and his football brain was there for all to see when he made Javier Hernandez's second goal against Marseille. His pass to Ryan Giggs was fantastic.
"It is a big plus point. Having both Antonio and Nani is a big boost for us."
United currently sit five points clear of Arsenal at the top of the Premier League table and take on West Ham at Upton Park on Saturday.