George Baldock has joined Oxford United on loan until the end of the season.
The 21-year-old defender has found first team opportunities at stadium:mk limited this season, playing just 14 times this season.
The deal with United includes a 24-hour recall clause after 28 days of the loan.
“George needs to go out and get some game time and while we have cover at the right-back position,” said Dons boss Karl Robinson. “This is an ideal opportunity for him to do that.
“We have the 24-hour recall clause in place should we need George to come back and help us - this loan move ensures that he will be ready and match sharp if that were to occur.”
Meanwhile, Tom Flanagan has returned to the club after his loan spell at Plymouth Argyle expired.
Flanagan made four starts for the Pilgrims.