Roy Keane eviscerates Celtic spell as he reveals Man United comedown and the 'idiots' in the dressing room

Roy Keane has confessed he had a major reality check after swapping Manchester United for Celtic.

The iconic United midfielder brought the curtain down on his Old Trafford career when he moved north of the border to live out a boyhood dream at Celtic Park in 2005. The Irishman got his Celtic career off to a nightmare start in the Scottish Cup shocker against Clyde and has previously claimed he "embarrassed" himself during his Hoops tenure – but would go on to lift the league title and League Cup during his six-month stay in Glasgow's east end.

And speaking to Gary Neville's Stick To Football podcast, he admitted he came crashing down to earth when he left United - as he eviscerated the facilities on offer at the time. While Ian Wright discussed leaving Arsenal on the show, Keane interjected: "You talk about getting a shock, I remember when I went to Celtic – it's this iconic, amazing club. But I leave United and the stadium (Celtic Park) is amazing, but I hadn't really seen the training ground.

"I am going back a few years, they have a good one now, but I was in the dressing room at Celtic and they go to the dressing room to get changed, and I had been at United; but you change at Celtic Park and drive to the training ground in your boots and your gear. Three or four of us would drive in the car and usually it was f****** raining up there, we would train and then all get back in the car and drive back. All of a sudden you are thinking, 'this is different'.

"But for all my comforts at United I did enjoy being in another dressing room. The Celtic lads, there was one or two idiots, but generally speaking they were all great lads. I really enjoyed my time at Celtic in terms of a different dressing room."

Keane also lifted