Jackie McNamara says that Christopher Jullien had his “best game for Celtic” in the Old Firm win over Rangers at Ibrox.

The former Hoops and Scotland star, speaking exclusively to Football Insider, says that he was mightily impressed with what he saw from the summer signing against the Gers, insisting he gave neither Jermaine Defoe nor Alfredo Morelos a chance at the heart of the defence.

Goals from Odsonne Edouard and Jonny Hayes secured a 2-0 win at Ibrox for the Bhoys in what was the first derby day of the season.

However, it was the man at the other end of the pitch who caught McNamara’s eye, insisting it was the Frenchman’s best performance in Celtic shirt since his move to Parkhead.

McNamara told Football Insider: “I thought it was his best game, defensively – those around him and in the midfield helping and blocking – he didn’t give Rangers a chance with either Defoe or Morelos.

“Definitely his best game for Celtic, heading it, defending, it – I thought he was good. The fact Forster didn’t have anything to do shows you how good the guy’s done.”

Jullien has played eight times for the Hoops so far, starting the club’s last three fixtures in the Scottish Premiership, while he got his first goal against AIK in the Europa League qualifiers.

The 26-year-old joined Neil Lennon’s side from Toulouse after playing 99 times in Ligue 1.

In other Celtic news, McNamara has told Football Insider that the fans at Parkhead should be excited by one new arrival.