West Ham are favourites to sign Borussia Monchengladbach midfielder Havard Nordtveit.
Nordtveit, 25, has impressed with his performances in the Bundesliga and Champions League this season.
The Mail on Sunday says West Ham are finalising a deal for Nordtveit.
The Norway international, who spent three years at Arsenal and was captain of their reserves, has agreed a pre-contract and will officially join Slaven Bilic' s side in July.