Brendan Rodgers bemoaned Celtic's lack of quality after they were dumped out of Europe with a 2-0 defeat at Lazio.

The Hoops are guaranteed to finish bottom of their Champions League group after Ciro Immobile's brace off the bench ensured they remain on just one point after five games played.

Celtic are unable to catch Feyenoord in third, meaning even a place in the Europa League knockout stage is out of reach.

Rodgers was without Luis Palma, Daizen Maeda, Reo Hatate and Liel Abada in Rome — and afterwards suggested he would like to add to his options in the transfer market.

The 50-year-old 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.

"Sadly for us, over the course of all the games, we’ve been hampered with our squad and availability. At this level, for us, that's the very minimum.

"But I have to commend the players that have been playing. They have given everything. The game was very competitive right the way through.

"We lose two goals but the effort and commitment was there.

"In the last 20 minutes we looked like the team that could go on and get the result, but we gave away two poor goals.

"The first one, we're in a great position up the pitch and we lose possession and never recover our shape. Then they get a bit of luck with the deflection. That was a tough one to take.

"For the second goal, we obviously need to be stronger and better."

Celtic finished on just two points in their Champions League group last season and will want to better that tally in their final game against Feyenoord next month.

Rodgers added: "We want to finish on a high. We want to win in front of our own supporters.

"Our support has been incredible, travelling all round Europe. They haven’t seen us win and we’d love to give them that victory at home and finish off with a positive result."