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Liverpool full-back Jon Flanagan knows from bitter experience what “top class” new signing Sadio Mane is capable of.

The Senegal attacker, who cost the Reds £30million from Southampton, wrecked Flanagan’s big day as captain at St Mary’s back in March.

The Reds were cruising at 2-0 up but Mane’s introduction for the second half transformed the contest and he scored twice as Saints ran out 3-2 winners.

Flanagan believes Liverpool have invested wisely in securing the services of Mane, who netted 15 goals for Southampton last season.

“Don’t remind me about that game!” Flanagan told the ECHO.

“He showed that day what a great player he is. We saw that regularly from him in the Premier League last season.

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“He has pace and power, and he’s a great finisher as well.

“I’ve seen it already in training this week. He’s a top class player and I think he’s going to be a great asset for us this season.”

As well as Mane, Flanagan has also been getting to know fellow new boys Loris Karius, Marko Grujic and Joel Matip at Melwood.

“They are all good lads who are settling in well,” he added.

“Matip is a big lad who is great on the ball. They all seem top players.

“We can’t dwell on what happened at the end of last season. We have to put that behind us and crack on. The signings can help us have a better season in the league and a couple of good runs in the cups.”