Jose Mourinho has mocked Arsene Wenger for suggesting Chelsea's offloading of Juan Mata is a cynical short-term move that could come back to haunt the Blues.
The Chelsea boss, who has had many a spat with the Arsenal boss down the years, was unimpressed with the argument that it was unfair to sell a player who could damage Chelsea's title rivals, Arsenal and Man City.
“Wenger complaining is normal, because he always does,” Mourinho said. “It's something that we know.
“But when a player plays for a club on 20th August and two weeks later plays against the same club with a different shirt, this is normal. We don't do the market and we don't do the rules.
“If Wenger sells Mesut Ozil to Man United in this moment, I would be very happy, because he's selling a very important player. Normally he should be very happy that Chelsea sold a player like Juan Mata.
“This is a little bit his nature, and we have to accept the way he is.
“But when he says its not fair, I think what's not fair is his team always has the best days to play. Always.
"This week without a midweek game, what everyone wants to do is play before [everyone else] to have more time to rest for the next week.
“This week, who plays Friday [Arsenal], who plays Sunday [Chelsea]? This is not fair. They always get the right time to rest, the right time to play.”