Manchester United thought they were closing in on a deal for Godin this week.
His agent approached the club to tell them of the 32-year-old’s £18m release clause at Atletico Madrid.
But as soon as United showed their interest in the Uruguay international, his agent used the link to negotiate a new contract at Atletico.
Godin is all set to pen the deal, leaving United red-faced and without a signing.
And ex-England manager Sam Allardyce says the Red Devils should have known better when first approached.
Asked on Sky Sports News who had ‘slipped up’ over the transfer, Allardyce said: “Manchester United.
“Never trust a payer’s agent to do a deal for you in a transfer, ever.
“He just used Manchester United to get a great deal out of Atletico Madrid.
Never trust an agent or the player to do a deal for the football club. He wants to do the best deal for the player, that’s his job.”
Allardyce is an experienced manager, having taken charge of the likes of Bolton, Newcastle, Blackburn and Everton during his career.
And the 63-year-old says United should have gone about their business with Godin in a different way.
“If Diego Godin had answered the door, I would have either gone direct to the club or I’d have gone through an agent that Manchester United can trust and use quite a bit themselves, and try and get this deal done together,” he said.
“Obviously we’ve all been used in that way, in some stage or another, where we’ve been told that you can get a player, and then all of a sudden they get a greater increase in their contract.
“The agent you can say has done a fantastic job for him and that’s what the agent is all about.
“It frustrates you but then you cannot moan about the bad ones that happen to you, you’ve got to look at the good ones.
“A lot of agents will actually get you that player sometimes, and then you know you can trust that player.
“It’s a difficult world. Very, very difficult.”
United end the summer transfer window having signed just three players – Diogo Dalot, Fred and Lee Grant – for a combined £70m.
They host Leicester in the Premier League opener on Friday night with Mourinho most likely still unhappy about how the transfer window has panned out.
Source : EXPRESS