Manchester United boss Sir Alex Ferguson has heaped praise of FC Basle veteran Alexander Frei.
United will crash out of the competition if they lose in Switzerland against the team who held United to a 3-3 draw at Old Trafford in September.
And Ferguson's players will be wary of midfielder Frei, who has scored 15 goals this season, including two at Old Trafford .
Ferguson said: "Basel can score goals. The boy Frei is a finisher, there's no question about that. I just wonder how they'll approach the game.
"I can't see them going at us, to be honest. I think they'll try to wait and get something off the big striker and Frei. His goalscoring record is unbelievable at 32 years old."