From the UEFA Web site:
With regard to the UEFA Champions League semi-final second leg between Chelsea and FC Barcelona in London on Wednesday, UEFA has received both the referee’s and delegate’s report. UEFA is currently examining those reports, as well as gathering additional evidence. It will decide which action to take in the course of next week. No protest has been received with respect to the red card shown to FC Barcelona player Eric Abidal.
UEFA has also received a submission from Manchester United concerning the red card shown to the club’s player Darren Fletcher in the UEFA Champions League semi-final second leg against Arsenal in London on Tuesday. The UEFA Control and Disciplinary Body will meet on Monday to deal with this case.