Spain international Alberto Moreno was criticised for his performance in Sunday’s League Cup final after the full-back failed to stop Fernandinho’s opener at Wembley.
Flanagan tackles, he positions himself well and he talks. Now is the time to give him a go at left back, for me
The former Sevilla defender has featured regularly under Klopp since the German took over the reins at Anfield from Brendan Rodgers in October.
Flanagan completed his long-awaited return from a knee injury in January but has struggled to force his way into Klopp’s starting line-up.
But former Liverpool striker Aldridge urged Klopp to give Flanagan a chance to prove his worth ahead of the expiration of his Reds deal at the end of the season.
“I agreed with Jamie Carragher’s comments after the game about Alberto Moreno – and more specifically about Jon Flanagan,” Aldridge told Liverpool Echo.
“For me, he has to start against Manchester City on Wednesday. He has to get the chance now.
“His contract is up at the end of this season, and it needs sorting. If they have any doubts about the lad, then give him the opportunity to show what he can do. We’ve seen before that he can handle it – he never lets anyone down.
“Moreno can look good going forward at times, but positionally he leaves us wide open. He doesn’t read when to bomb forward and when to sit, and he’s so rash in his decision-making.
“Flanagan tackles, he positions himself well and he talks. Now is the time to give him a go at left back, for me.”
Flanagan missed over 18 months of football after the Liverpool youngster suffered a serious knee injury in 2014.
The England international was a key part of Liverpool’s title push in 2013/14 season.
MORE: Latest Man Utd news
MORE: Latest Arsenal news
MORE: The latest football news