The 27-year-old striker saw his first season at the Memorial Stadium prematurely ended by a troublesome ankle complaint that eventually needed surgery at the end of February.
And the Scotland international, who joined from rivals Bristol City last summer, hopes to report back for training with his team-mates on June 20 ready to build up to the new campaign.
"It was a very up and down first season for me," Clarkson told the Bristol Evening Post.
"It was a difficult season at times, but I have enjoyed it. It has been another learning curve for me and I'm looking forward to next season.
"I'm hopeful of being back and ready to go again at the start of pre-season.
"I've been able to start to do a bit of running over the last few weeks and it will be a case of building up my workload over the summer."