Report: Manchester United quoted £20m for Sam Johnstone

West Bromwich Albion are reportedly holding out for a bid of £20m from Manchester United for goalkeeper Sam Johnstone.

The Red Devils have been tipped to move for the 28-year-old as a back-up option should either David de Gea or Dean Henderson leave this summer.

Johnstone spent nine years at United without making any senior appearances, but he impressed in the Premier League this season with West Brom.

Despite suffering relegation to the second tier, and the 28-year-old being out of contract in a year's time, The Sun reports that Albion are refusing to let the keeper leave on the cheap.

That could also spell bad news for West Ham United, who have themselves been credited with an interest in the England senior squad member.

Speaking earlier this week, Johnstone accepted that his future is in the hands of West Brom while he remains under contract.