Arsenal's Tyrell Robinson and Manchester City's Lukas Nmecha in action
The Hammers may have added key signings in Havard Nordtveit and Sofiane Feghouli, but they've also been bringing in new faces for their development squad.
Attacking midfielder Domingos Quina has arrived from Chelsea, whilst Spanish striker Toni Martinez joined the club from Valencia back in April.
Now, it seems that West Ham are ready to raid London rivals Arsenal for one of their teenage talents, with Tyrell Robinson set to sign for the Hammers according to the Daily Mail.
Robinson, 18, predominantly plays as a winger, and can play on either side, with the Arsenal official website describing him as a 'pacy forward' and 'talented winger'.
The teenager has though proven his versatility, as he has played at left back for Arsenal's Under-21's, and is believed to be highly-regarded within the Emirates Stadium setup having impressed with his pace out wide.
Now though, Robinson looks set to leave the Gunners and move across London to the Olympic Stadium, with a clearer path to the first team a potential reason for his decision.
It's claimed that Robinson has been holding talks with West Ham recently, and is now set to put pen-to-paper on a two-year contract with Slaven Bilic's men, as they near another addition to their development squad.
Are you excited by the signing of Robinson?