Former Chelsea coach Ray Wilkins has hailed the market work of Jose Mourinho.
Wilkins is impressed by the ease Cesc Fabregas has settled since arriving from Barcelona.
"Take Cesc Fabregas," Wilkins told the Daily Express. "He has been the perfect replacement in midfield for Frank Lampard. Why? Because he finishes like a forward, just like Frank did. He doesn't panic when he gets a chance.
"What Jose does so cleverly is that he buys what is already proven - not potential.
"It was already known what Fabregas could do here. He'd been brilliant at Arsenal, but couldn't get a game for Barcelona. So Jose brings him back for £30 million and he is an absolute revelation.
"Lots of clubs bring in players at 20, 21. They are good players - and potentially very good players. Mourinho buys THE player, ready-made."
