Pressley, appointed in March, has over the last couple of games been given the chance to fully assess his fringe players and those breaking through the ranks after Coventry's 10-point deduction for going into administration ended their play-off hopes.
And the Scot believes he needs to work with a smaller squad next season to boost City's chances of promotion from League One, although his attempts to bring in more quality will be on hold until the club's transfer embargo is lifted.
"When I came in I knew I had six or seven weeks to assess the squad and see what type of players I had to work with," he told Coventry's official website.
"I knew it would be difficult to assess them in a first-team environment but the 10-point deduction has given me that opportunity to assess my options.
"Of course I wanted us to fight for the play-off places but once the deduction happened, I knew it presented an opportunity.
"Moving forward, I do believe we need to reduce the size of the group. I want a more manageable group, a hungry group. That is a group which can take the club forward and that is what I will be working towards."