O'Neill admits new signings are struggling with demands of being a Celtic player after dispiriting loss at Falkirk

Celtic boss Martin O’Neill admitted his summer recruits need to prove that they have the character and quality to handle the pressure of playing for the club. The league leaders went down 2-0 at Falkirk on Sunday afternoon – their sixth defeat in their last 10 in all competitions – as they missed the chance to extend their advantage at the top of the Premiership table to seven points. First-half strikes from Ethan Ross and Scott Tanser had the Bairns ahead at the break, and despite peppering Scott Bain’s goal in the second period, the visitors were unable to find…