West Ham United have joined Manchester United in the race to sign an ‘exciting’ teenage striker this summer transfer window, according to a recent report. David Moyes departed The Hammers at the end of the season and former Real Madrid boss Julen Lopetegui has become his successor. The Spaniard will be eager to make his own imprint on the squad this summer as he looks to return the club to Europe. That said, it seems he’s already identified a highly-rated striker. READ MORE: Manager worried his £26m player could leave after he’s linked with West Ham UnitedWest Ham United interested in signing …