The Scotland international was handed an extended rest period following the British & Irish Lions tour of South Africa and both he and tighthead prop Zander Fagerson are in line for their first appearances of the season.
Price made seven appearances on the tour, including two starts and one substitute appearance in the Tests.
"It was a brilliant experience in the summer," he said. "On a personal level I got out of it everything that I could have wanted.
"I think how I read the game and how to manage and control a match, I took a lot away from being involved in that environment in the summer.
"It's been a long time since that third Test so I am excited to just get out there really and get the ball in my hands and start playing with the boys, and pick up from the summer, to be honest.
"That was great but it's gone now and I am on to the next job and I want to keep improving. The best way to do that is by being out there playing. It will be good to get out there and have a run around on Friday.
"They (Leinster) have set the benchmark in this league with their performances and titles they have won on the trot, and if you want to find out where you are at as a team, it's seeing how you perform against teams like Leinster," he said.
"It's an exciting challenge and then into the autumn Tests, more tough games, but they are the ones you want to be involved in."