Serhou Guirassy has made his big decision amid links to West Ham and Newcastle United claims a German journalist. West Ham and Newcastle United have both been heavily linked with mutual interest in several strikers in the January transfer window. Both the Hammers and the Magpies have been linked with longstanding target Hugo Ekitike again as well as Dominic Solanke and Armando Broja. But the striker widely reported to be at the top of West Ham and Newcastle’s transfer wish list is Serhou Guirassy. Moyes and Howe battling for strikerThe 18-goal Stuttgart striker has a £17.5m release clause in J…