Manchester United boss Sir Alex Ferguson may be at Stamford Bridge tonight to see Chelsea's clash against Benfica.

Ferguson will certainly have a United presence in the stands as he considers Benfica midfielder Axel Witsel for a summer move.

United scouts were posted in Lisbon for the first-leg of the Champions League clash to run the rule over the Belgium international.

The Times says Ferguson hopes to do business for around £20 million, though Benfica have so far insisted Witsel will not leave for less than £35 million.