Walsall, who reported back for pre-season training on Wednesday, secured their first loan deal from a Premier League when Southampton defender Jason McCarthy signed for the first half of next season.
“West Ham brought George in from Arsenal where he played as a centre half but was moved forward to play as a holding midfielder which is where we see him playing,” added Whitney.
“I know he’ll go on to be a top player of highest level and we’re lucky that West Ham have entrusted us with his development for the next 12 months. Age isn’t a factor. If he comes in and is good enough then he will play.”