Bryan Robson believes former Manchester United teammate Roy Keane is happy in his assistant's role with the Republic of Ireland.

Despite Keane's fiery nature, Robson can see Keane enjoying being Martin O'Neill's No2.

"Sometimes it can suit you being a No 2 rather than a No 1," Robson told the Irish Independent.

"Martin O'Neill has proven over the years that his man-management style is pretty good so Roy is maybe a bit more chilled being No 2.

"He can enjoy the training and the bit of banter with the players rather than having to go in and have a go at the players. It maybe suits Roy that little bit more.

"I've been in the same position myself, I was manager at Middlesbrough and West Brom and you're the one who has got to lay the rules down for your players whereas your coaches can enjoy it a bit more.

"I had that situation when I was with England, that was one of the most enjoyable jobs I had, being assistant to Terry Venables for a couple of years. I really enjoyed the role. Roy obviously enjoys the role under Martin O'Neill.

"You have to be professional, but you're not putting yourself in the firing line."

Robson reckons it is inevitable that Keane will one day return to management, considering he has a "strong mind" and "strong opinions".