Michael Brown admits it looks as though West Ham have made a mistake selling Grady Diangana to West Brom for £18million. 

Speaking exclusively to Football Insider assistant editor Russell Edge, the former Tottenham and Portsmouth star insists that the eight-figure fee will represent great value for money if the winger can establish himself in the Premier League.

Football Insider understands that the Hammers accepted a £12million offer, rising to £18million in add-ons, for the 22-year-old and he completed his move to the Hawthorns last week.

West Ham captain Mark Noble admitted he was “gutted, angry and sad” that the club had chosen to sell the promising attacker.

Brown believes that while the board at the West Ham will have made a calculated decision to let the homegrown star leave, the outcry from both fans and West Ham stars suggests they could have made a transfer blunder.

Brown told Football Insider: “They won’t have taken that lightly and the reported £18million, you would have to say, that with the experience that’s in that building, they have a reason why they’ve accepted that.

Subscribe to Football Insider TV now

“Time will tell – if he goes on to play really well in the Premier League then £18million is not a lot of money but if they’ve got other targets now that they feel that £18million could go towards, you’ve got to say you look at the board and directors, they’re extremely experienced at running football clubs.

“Hopefully they’re all on the same page and all in agreement that it’s a great decision for West Ham. At this point now, as we’re all looking going: ‘Phwoar,’ it might not be.” 

Diangana came through the youth ranks at West Ham and played a total of 17 times for the Hammers’ first team.

Manager David Moyes currently has the likes of Felipe Anderson, Andriy Yarmolenko, Pablo Fornals and Manuel Lanzini as his winger options at the London Stadium.

In other West Ham news, McAvennie tips goal machine to join after £9million deal agreed.