Martin O'Neill can't guarantee Celtic transfer arrivals as boss warns fans 'it's not been easy'The Hoops are scrambling in the final days of the window to add new facesCeltic v Utrecht - Best of the Europa League action from ParkheadMartin O'Neill admits he can't "guarantee" more new recruits at Celtic before the end of the transfer window. ‌But the interim boss is optimistic that there will be new faces in the door amid rising pressure from supporters. ‌Speaking to TNT Sports after the final whistle, attention quickly turned to the transfer window. View Image Celtic boss Martin O'Neill paroles the Celtic Park touchline‌"Celtic fans think it's always us, but I have had transfer windows myself - not at Celtic necessarily - where you are just twiddling your fingers and letting the day got passed, as much as anything else. Pressed on if there was a "guarantee" that by the deadline there would be new faces inside Celtic Park.