Ronny Deila criticised the St Mirren Park pitch after Monday night win . Celtic beat St Mirren 2-0 away from home in the Scottish Premiership . Teale insists Deila 's criticism was unjustified and unfair on the club .
Ronny Deila criticised the St Mirren Park pitch after Friday night 's win . Celtic beat St Mirren 2-0 away from home in the Scottish Premiership . Teale insists Deila 's criticism was unjustified and unfair on the club .