West Ham must strike now if they are to secure a deal for Blackburn Rovers goalscorer and defenders’ “nightmare” Adam Armstrong.  

That is according to ex-Arsenal striker Kevin Campbell, speaking exclusively to Football Insider after The Sun revealed that West Ham remain keen on the striker but are reluctant to shell out Blackburn’s £25million asking price.

Armstrong – an U-20 World Cup winner with England in 2017 – has 19 goals in the Championship this season.

Michail Antonio has been West Ham’s only natural centre-forward option since Sebastien Haller departed the club for Ajax in January.

Campbell highlighted West Ham’s anaemic forward line, urging them to abandon other targets and secure the 24-year-old’s signature before someone else does

He told Football Insider correspondent Dylan Childs: “The squad strength isn’t quite there at West Ham. Antonio is a great player but if he needs a rest, there isn’t really someone who can come in and be that guy.

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“Moyes is limited with who he can pick up top. Armstrong has had a good season and I think will be a good signing for West Ham and they should probably make that move before he goes somewhere else.

“He’s a handful. Small strikers are a nightmare for centre-halves because centre-halves are almost always tall.”

Armstrong signed for Blackburn permanently in summer 2018 after spending half a season on loan at Ewood Park the previous campaign.

He has been deployed primarily as a winger in his time in East Lancashire but is now flourishing in his preferred role through the middle.

In other news, Manuel Lanzini remains desperate to quit West Ham this summer after a January move to European giants fell through.