Will Celtic add more quality in January? - video debate

Brendan Rodgers' men were outdone by Lazio legend Ciro Immobile who came on as a substitute and netted a brace within three to end Celtic's interest in the Champions League for another season. The loss leaves the Scottish champions rock bottom of Group E with just one point from five Group E matches.

It was the men in green and white's 15th successive game at the top level of European football without a win which was a new unwanted record for a British club. The Northern Irishman believes that there are two factors hindering Celtic's progress on the European stage.

READ MORE: Celtic's Brendan Rodgers in 'availability' player problem

The 50-year-old said: "I think in terms of ourselves, especially in my experience over the five games is that we’ve never really had the squad that we would want to go into each game, from the very first game we’ve had players missing.

"We certainly haven’t been at our strongest in the competition. A club like ourselves operating at this level needs to have its strongest squad available for that. That’s always the starting point. Secondly, this level is about quality, and you can’t fault the players and their effort and commitment as they have everything. It comes down to that wee bit of quality and availability of players."

However, Rodgers was adamant that he was determined to address those issues in the January transfer window. He said: "It's the overall quality. We need to have our very best players available. What makes the difference is that bit of experience and genuine quality. That's something we can hopefully resolve over the next couple of windows.

"This group has gained more experience and shown they can compete in some games - but we need to add quality. That's the glaring thing that stands out."

Celtic will close out their Champions League campaign against Feyenoord next month.

Join Tony Haggerty and Ryan McGinlay as they discuss all the latest Celtic news.