Arsenal boss Arsene Wenger feels Chelsea will regret selling Juan Mata to Manchester United. Mata is due to arrive in Manchester today to undergo a medical ahead of his switch to United as their record signing.
"I am surprised because Juan Mata is a great player and they sell a great player to a direct opponent," said Wenger.
"He sums up what Chelsea's thinking is.
"That is a very short-term calculation. Next season they will have to play them again. They could regret it."
