Arne Engels has pledged to repay his record £11 million fee back to Celtic after joining the club on a four-year deal from Augsburg on deadline day. The Belgium international made his debut against Rangers earlier this month and has since won his first cap for The Red Devils at senior level, capping a productive couple of weeks from a personal standpoint. Engels has arrived with a lot of pressure on his shoulders following his big-money move from the Bundesliga. Celtic’s engine room is loaded with talent, but he will surely relish the challenge to beat off competition for a place in the side. …