Players looked sharper, the attacking play had purpose and the Celts punished Kilmarnock rather than allowing the game to drift. Central midfield needs quality, particularly with speculation continuing around Arne Engels, but left-back is another position that cannot be ignored. Taylor departed looking for a new opportunity following Tierney’s return to the Scottish champions. They need a left-back capable of stepping into the team without Celtic having to drastically alter how they play. Celtic are actively looking for another left-back, and given Tierney’s importance and the lack of another senior option, it is business that needs to be done.