Arsenal manager Arsene Wenger believes that Manchester United's £37m swoop for Juan Mata provides a perfect example of how flawed the current transfer system is, telling Sky Sports News in his latest pre-match press conference that the current structure is not entirely fair to all 20 Premier League games.
United are expected to complete a club-record swoop for Chelsea's Spanish schemer later today, just four days after slumping to a 3-1 defeat at Stamford Bridge in their latest Premier League clash.
Chelsea have already faced United twice this season, which means Mata will not come up against his former club in the current campaign, but will get the chance to make an impact against title rivals Manchester City and Arsenal in the coming weeks should the deal be finalised.
Wenger thinks that Chelsea have gained a questionable advantage by allowing Mata to move on and still prove potentially decisive in the title race by signing for United, calling for the January window dates to be examined while also sharing his surprise that the Blues are letting the playmaker join a perennial rival.
He said: “Yes I am [suprised] because Juan Mata is a great player, and they are selling great player to a direct opponent.
"It opens again a little the opportunity of this transfer market because Chelsea has already played twice against Manchester United and don’t play them any more. They could have sold him last week.
“It opens the opportunity of the dates of this transfer window. Some teams have already played twice against one opponent and some others not, and I think if you want to respect the fairness for everybody exactly the same, that should not happen.
“I just think that you want everybody on the same level.
“I can understand completely what Chelsea is doing, but maybe the rules should be a bit adapted to more fairness.”
Blues fans will probably take a dim view of Wenger's words, particularly when he gave the green light to a deal which saw Robin van Persie swap the Emirates for Old Trafford in 2012.