The young Norwegian has headed out on loan to the League One club.
West Ham United have been happily using the emergency loan window to send out some of their talented fringe and youth players out to the Football League to gain some first-team football.
One such young man was a player that has impressed in the ranks since his arrival from a Premier League rival in the summer.
Young Norwegian Martin Samuelson has headed out on loan to League One side Peterborough United until January.
The 18-year-old midfielder joined up with The Hammers in the summer from the academy at Manchester City, where he had impressed.
Samuelson has impressed in the West Ham under-21s and he has even made his first-team debut for West Ham - playing against Birkirkara in the Europa League
But perhaps it is July when he first caught the eye of Peterborough United.
Samuelson scored his first goal for West Ham with an excellently struck half-volley at London Road in a pre-season friendly against The Posh - which ended 3-3.
Now he will be hoping to put the ball in the opposing net for the League One club.