Celtic manager Neil Lennon is considering defensive changes following their 4-2 defeat by Rangers.
Lennon analysed their second-half collapse at Ibrox with his players before concentrating on tonight's Scottish Communities League Cup tie against Ross County, and changes are likely for the trip to Dingwall.
Kelvin Wilson is a doubt with a thigh injury and Mark Wilson drops out through suspension but Lennon may make unforced adjustments.
Lennon admitted his team had been pushed too far back in the second half and could not deal with the resulting pressure.
“If you are able to defend as well as some teams do with crosses and set-pieces, then that's fine, but we didn't deal with crosses well enough and we didn't stop the crosses in the first place,” he said.
Celtic also lost a simple goal from a corner days earlier when Falcao put Atletico Madrid ahead in their Europa League clash in Spain.
Lennon said: “You can do a number of things — you can change the way you defend corners or you can change the personnel.
“We will talk about that and take it from there.
“We half-zonal and half man-mark which we have been doing since I've come in really.
“We have conceded two in two games and they are the first two we have conceded for a long time in corners.
“The system seemed to suit us, it just might be the personnel needs changing in that area.”
Lennon, who replaced injured left-back Emilio Izaguirre with Badr El Kaddouri before the transfer window closed, has only named the same back four in successive games on one occasion this season.
“We would like to get a consistent four but some players have been suspended or injured or out of form,” Lennon said.
“We would all like to get a settled back four but with Badr being excluded from European games, then there is always going to be need for change.”
Ross County are hardly ideal opponents for Celtic on the back of consecutive defeats given their Scottish Cup semi-final win over the Parkhead club last year, but Lennon does not believe he has any personal demons to exorcise against Derek Adams' side.
“I think I did that by winning the cup last year,” he said. “People will throw that fixture up. It's ancient history as far as I'm concerned but it's a fixture that will have that extra edge because of what happened.”