View: Celtic must rival Everton to sign 50-time international reportedly valued at £8m
Set-piece specialist
With Roberts returning to parent club Man City and Moussa Dembele expected to start ahead of Scotland international Leigh Griffiths, Celtic do not have anyone seriously renowned to take free-kicks.
Bringing former Rennes star to Parkhead would replace that, as he is renowned for his sublime left foot and inch-perfect precision from dead-ball situations.
That would give Celtic goals out of nothing, as they look to give themselves every chance of scoring the goals that will seem them replicate last season’s efforts.