Timo Weah has backed Scott Brown and Neil Lennon to rescue Celtic's season.
The Lille star spent five months on loan at Parkhead in January 2019 - four under Lennon after Brendan Rodgers' exit to Leicester City.
Celtic find themselves 13 points behind league leaders Rangers after their 1-1 draw with St Johnstone on Sunday.
But Weah, who will go up against his former side in the Europa League on Thursday night, is confident his old team-mates will turn things around and Lennon is the man to do so.
The ex-PSG youngster also praised Brown's leadership qualities and believes the skipper will push the dressing room forward to turn the tide for Celtic.
He said: "I feel they are going to do it and I hope they do because, having been a player there, I'd love to see them do 10 in a row.
"Each team has their ups and downs and this is just a down for Celtic at this moment.
"But I have full confidence in the coaching staff that they are going to sort things out. I know the guys, they are 100 per cent fighters. They are warriors over there, so I know they are going to get back on track.
"Scott has the ability to do whatever he wants and anything he puts his mind to.
"When I was at Celtic he was an exceptional captain, I enjoyed playing with him and he was the guy who pushed us. He pushed the team on when moments weren't good, when we had a loss or difficult game then Scott would be the one who would pick us up.
"Even though he takes a lot of the criticism, he's the one who gave us the best energy in the dressing room and on the field.
"Scott will do it for the team as he's willing to do anything for the team.
"He loves the club and loves the guys he plays with. I feel it's going to take time but they are going to do it, it's going to happen."
Weah looks back at his time at Celtic fondly and insists Lennon is a "top motivator" who excels when his back is against the wall.
He added: "When I was at Celtic we had fun, training was fun and we were a winning team and top of the league. The coaching staff was amazing to me as a person and as a player.
"They took the time to work with me and the bond that we had as a team and the coaching staff was amazing. Neil was great to me, I left the club in a bit of a rush because of the World Cup and things happen, but overall he was a great coach and we loved him.
"He's a top motivator, he was a player himself and he knows what it's like to have difficult moments and to not be on your 'A' game.
"He was always there for us, this is just a moment where the team is down just now but he is the guy for the job and I know he's doing it right."
