Dons boss Karl Robinson criticised his players after a 4-2 home defeat to Walsall on Boxing Day, and it appears that the manager may be looking to bring in new faces in a bid to freshen up a squad hopeful of promotion.
Harley has appeared on just two occasions for Brighton in the league this season, and the 27-year-old is actively looking for first-team football.
After an impressive four-year spell at Exeter City, the midfielder moved to Brighton following a brief spell at Swansea, but has struggled to make an impact since arriving on the South Coast after scoring on his debut.
Harley is expected to join MK Dons on loan until the end of the season, according to Sky Sports, and will make the move when the transfer window officially reopens next week.
