Cape Town - Circumstances surrounding the signing of Cesc Fabregas by Chelsea were not as 'clean' as purported to be, according to Arsenal manager Arsene Wenger.
The Spain midfielder is expected to feature as Chelsea take on the Gunners in a much-anticipated Premier League encounter this weekend.
Fabregas was sold by Arsenal to Barcelona in June 2011, and it was suggested the North Londoners would have first refusal on the Spaniard should he decide to return to England.