Celtic boss Ronny Deila has said that his side should have won by a bigger margin, after they beat Ross County 1-0.

Kris Commons's second-half strike was enough for the Bhoys to take a three-point lead at the top of the Scottish Premiership, but Deila isn't happy that his team didn't score more.

"I think the first-half performance was good and the first 20 minutes of the second half. County defended well like they did at Celtic Park and it was difficult to get the tempo up," he told BBC Sport.

"But our attitude was good and we worked hard to get the ball back every time we lost it. We tried to play good football on the floor but the pitch is not so good. We should have scored more so I don't think you can say the win was lucky."

Celtic next face Rangers in the Scottish League Cup semi-final.