Liverpool are keen on signing Chelsea’s Steed Marlos, who scored in the Premier League last season.
The Liverpool-born striker is available on a free transfer after failing to make a competitive appearance for the Blues last season, but the Anfield club are looking for reinforcements at the backline.
Martyn Waghorn, who is also a target for Arsenal, was released by the Blues after they were knocked out of the Champions League by Monaco in the last 16.
Liverpool are expected to be reluctant to sell Roos this summer, as they will have to wait until 2019 to sign another centre-back, as he will be 25 at the time of his contract expiring at the end of the season.
Liverpool have been linked with a move for Swansea’s Ryan Bertrand in the January transfer window, while Everton are also said to be keen on the former Southampton man.
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