NEIL LENNON has bemoaned Celtic's frailties from set-pieces after watching his side let a two-goal lead slip away to draw against Lille.

A stunning first-half double from Moi Elyounoussi saw Celtic storm ahead against the unbeaten French side, but Zeki Çelik capitalised on slack marking from a corner to drag Lille back into the game before Jonathan Ikoné completed the comeback.

That left Lennon with a mixture of pride and frustration in his team's performance as he reflected on the point gained from the evening.

"I think we came here and played really well," Lennon said.

"I thought we got fatigued as the game went on. You could see the effect the Covid has had on them.

"A few of the players were coming back, but I’m delighted with the approach to the game.

"First half we were outstanding and I thought on the counter attack we could have won the game. The only disappointment for me is that we conceded again from a set-piece.

"That’s something we talked about endlessly and we have to deal with them better when they come into our box.

"But there were some great performances under the circumstances.

"It’s a point that keeps us very much alive in the group."

The other negative in what was largely a positive night for Celtic was an injury picked up by Kristoffer Ajer which forced the defender off early in the second half.

It is the latest setback to affect Lennon's defensive personnel, which has been disrupted heavily recently through illness and injury to Hatem Elhamed, Nir Bitton and Christopher Julllien.

“Ajer felt his groin go so it’s not great, by the looks of things," Lennon said.

"We’ll have to see how long he’s going to be out for. But I would think he’s a doubt for Sunday.”