ABERDEEN boss Derek McInnes is confident his side have the potential to cause Celtic problems when they travel to Parkhead on Saturday.

The ex-Rangers midfielder reckons Jonny Hayes and Willo Flood will be fit for the game - although left-back Clark Robertson is injured - and believes Dons can worry Ronny Deila's side, having beaten Neil Lennon's Celtic twice in 2014.

"There's a lot of change and obviously different ideas coming through from the manager and staff but behind all that there's still an ability there and players that can make the difference on any given day," McInnes said.

"But they have been a wee bit inconsistent since the start of the season.

"I'm more concerned about my team's performance. We have players that can cause problems for Celtic, whether they are on good form or not."