The Dons were desperate to extend the 20-year-old's loan spell from Chelsea until the end of the season, but the Premier League giants have decided to send Bamford to Pride Park instead.
Bamford has netted an impressive 16 goals for The Dons so far during this campaign, and manager Karl Robinson admits that he'll be hard to replace.
– Karl Robinson, MK Dons Manager
"We've got to try and find somebody who's going to replace him (Bamford).
We wish him all the luck in the world and we thank him for his efforts.
But we have to move on as well. We'll remember him, he'll always be welcome back here, and you never know, in the future he might put our shirt on once again."
Robinson's side currently sit six points outside the play-offs, with a 0-0 home draw with Colchester United on New Year's Day seeing them lose ground on the top six.