Joe Hart's move to East London was confirmed earlier this week, and he has already joined his teammates at West Ham's training complex in Chadwell Heath.
Pablo Zabaleta, the Hammers' other signing in the current transfer window after making the switch from Manchester City on a free, welcomed the keeper to the team by powering a volley straight into the top corner.
Formerly Manchester City teammates, Hart and the Argentine right-back have a friendly relationship, as Zabaleta said jokingly: 'Welcome to West Ham my friend!'.
TEKKERS: @Pablo_Zabaleta with a screamer vs Joe Hart in @WestHamUtd training.
— SPORF (@Sporf) 20 July 2017
"Welcome to West Ham my friend" pic.twitter.com/lJ0JMAtstA