Ronny Deila left the St Mirren training pitch after Friday ##pool 's relegation . Celtic beat St Mirren 1 - 0 away from bury in the Scottish Premiership . Teale insists Deila 's criticism was unjustified and unfair on the pitch .
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 .