West Ham's Reece Oxford in action with Werder Bremen's Florian Grillitsch
On the face of it the deal to allow the 18-year-old to head to the Bundesliga is a strange one, but the Hammers can point to another young centre-back from the Premier League who made a similar switch as evidence that this could work out.
In the summer of 2015, Chelsea starlet Andreas Christensen joined Gladbach on a two-year loan and has since played 82 games for the club over two seasons.
During that time the 21-year-old featured in 11 Champions League matches and three more in the Europa League, giving him vital experience on the biggest stage ahead of his return to Stamford Bridge.
Borussia Monchengladbach's Andreas Christensen celebrates scoring
So far the only loan experience Oxford has had is six months with Reading at the end of last term, which although included a run to the playoff final, the Championship does not quite have the same prestige as the German top flight.
West Ham fans will have to keep a close eye on how the England Under-20 international gets on at Borussia-Park as it could be just the thing to help him realise the potential he first showed when he broke into the first team aged 16.
West Ham's Reece Oxford on the substitutes bench