Manager Ronny Deila asked Celtic fans to recognise the positives in his team after they lost their League Cup semi-final to Ross County at Hampden.Efe Ambrose was sent off and Leigh Griffiths missed a penalty as Celtic lost 3-1 to Jim McIntyre's men.Celtic were in control of the semi-final after only 30 seconds, when Gary Mackay-Steven prodded Griffith's cut-back into the net.But, 13 minutes later, the game was turned on its head when Ambrose fouled Alex Schalk in the box and Martin Woods scored after the Nigeria defender was sent off.