Friedel, 41, has been linked with former club Blackburn, after being dropped for £8m summer signing Hugo Lloris from Lyon. But Villas-Boas said: “We are trying to hold onto our best assets and Brad is certainly one of them. Rotation has not been because of performances. Both goalkeepers’ performances have been excellent.”
Spurs need a point tonight to progress to the knockout stages, while three points could see them top their group above Lazio. Both Gareth Bale and Michael Dawson will miss the fixture with hamstring injuries.