The Northern Ireland youth international completed the switch yesterday after being on loan with the Latics since November.
A driving force in the engine room of our reserve team in the last few seasons, Mark, 20, won plenty of admirers at Spurs with his professional manner and work ethic.
Coach Chris has seen Mark's progress from Academy through to the reserves and the verge of a first team breakthrough in pre-season where he played in high-profile friendlies against Rangers, Celtic, Feyenoord and Partizan Belgrade.
He said: "Mark is one lad who we always knew would make a career out of the game.
"We were never quite sure at what level he would find his feet but always knew he would make it because of his work ethic here.
"I would have to say in the period of time we had him here, throughout any disappointments he might have had, there were never any problems. We might have had a big reserve team squad on occasions and he might not have made the reserve team but he would be back the next morning always ready to knuckle down again.
"From our point of view it's a well deserve move and we all hope he does very well there."
Chris Hughton was full of praise for Mark Hughes following the midfielder's permanent move to Oldham Athletic.