The duo had reportedly attracted interest from other clubs and Pressley has expressed his delight that the pair have remained at Coventry.
He told the club's official website: "My main concern leading up towards the end of the transfer window was keeping hold of our young players.
"We managed to do that despite having several offers on players and a lot of interest on several members of our squad.
"I'm delighted that we have been able to see the window through without losing anybody and that is a real positive going forward this season."
The Sky Blues drew 1-1 with Shrewsbury Town on Saturday.