The winger is the latest player to join Celtic on loan from Manchester City.
The 19-year-old recently joined the Bhoys on an 18-month loan deal but to date he has played just eight minutes in Celtic’s first-team after coming off the bench against Inverness Caledonian Thistle last month.
It is no surprise that Deila is bedding the teenager in slowly, but after impressing for Celtic’s development squad Roberts will no doubt be desperate to show his new club what he can do if given more time on the field.
Celtic have enjoyed previous success when it comes to dealing with Roberts’ parent-club Manchester City, with Jason Denayer excelling in Scotland on loan last season.
And now Deila has explained the agreement he has in place with City regarding the young winger.
“The agreement is that he comes to us and we try everything we can to develop him as much as possible,” he told celticfc.net. “If he’s good enough for the team then he plays and, if not, he sits on the bench.”
“You can’t make promises in this matter.”
It is a bold statement from Deila but it is also a sensible one. After all, Roberts is a young player moving to a new club in a new country and it is up to him to show he is worth a place in the starting line-up.
Denayer wasted little time proving his worth at Celtic but as a winger, consistency and impact could be an issue for Roberts in the months ahead.