Craig Gordon keen to impress Celtic boss Brendan Rodgers

Craig Gordon has been doing extra homework on Brendan Rodgers' demands on his goalkeepers in a bid to regain the Celtic number-one spot.

Gordon lost his place to Dorus de Vries, who worked with Rodgers at Swansea, for big games against Aberdeen, Rangers, Barcelona and then Inverness.

But the goalkeeping spot still seems up for grabs after the Dutchman conceded 11 goals in those four matches before being beaten by Souleymane Coulibaly from more than 40 yards during Celtic's 6-1 win over Kilmarnock on Saturday.

De Vries went off at half-time with a chest injury and Gordon got 45 minutes to show Rodgers what he has learned on his lay-off.

And the Scotland international will continue to work hard to impress his manager, who will await news from his medical team before selecting his goalkeeper for Wednesday's Champions League clash with Manchester City at Celtic Park.

Gordon told Celtic TV: "We'll see over the next few days. It was a chest injury he picked up so the physios will be looking at that.

"It would be good to get a run in the team but there's a lot of competition. We have now got four first-team goalkeepers that are all of a really good standard so it's going to be tough but it's a good challenge and one I'm definitely up for.

"I have been training very hard over the last few weeks to try to make sure I'm in the manager's plans and try and get a run in the team, and I'll continue to do that.

"I spoke to him once when he told me he was going to put Dorus in the team. I have not spoken to him since then but I have just gone away and tried to work and also do my homework on what he likes his goalkeepers to do.

"I'm trying to improve my game so when I go back in the team that I can maybe adapt more to what he's looking for.

"I'm still learning. I want to do as well as I can at the things he is looking for me to do and if I can do that and keep the standard of my play up, then I give myself a chance of getting a run in the team."

Gordon picked up some more useful information from his manager after Saturday's Ladbrokes Premiership game.

"He spoke to me at the end of the game on the pitch,'' the former Hearts and Sunderland player said.

"He's looking for me to demand the defenders drop deeper to get on the ball. He wasn't happy with some of their positioning when I had the ball. It's little things like that that are going to help make sure we are all on the same page."