Are Celtic reacting quickly enough to 'wake-up call'?

Are Celtic reacting quickly enough to 'wake-up call'?Image source, SNSImage caption, Martin O'Neill has admitted to doubts before accepting the permanent manager's job at CelticByCharlotte CohenBBC Sport ScotlandPublished2 minutes agoMartin O'Neill says last season was a "wake-up call" for double winners Celtic - but are the club acting quickly enough this summer?In his first interview since being appointed permanent manager on a one-year contract, the 74-year-old has admitted he is expecting "a tough old time" for the Scottish champions in the new campaign. After Celtic capped a title race for the ages with a dramatic final-day win over long-time leaders Hearts to retain the trophy, O'Neill is braced for another torrid battle with the Tynecastle side and Rangers."I think Rangers will get stronger, and Hearts won't go down without a fight, there's no question about that," O'Neill told Celtic TV."I felt every single time that we played matches [last season] the teams were getting closer to Celtic than perhaps ever before, certainly in recent times, so those are concerns."However, the speed at which the Parkhead club are moving would not indicate a sense of urgency. After leading Celtic to a league and Scottish Cup double in his second interim spell, O'Neill's appointment came on 11 June, almost three weeks after the conclusion of the season. It took a further two weeks before his backroom staff were confirmed, the same day the players reported back for pre-season training. That staff is a coach light after Gavin Strachan left to join West Brom."I thought that was very important," O'Neill said of having Fotheringham and Maloney signed for the upcoming campaign. "We gel together as much as anything else and I suppose, because the end result was that we won, then you start to feel that it was half decent. So it's nice to have the staff back."Celti...