McCall said new-look Sarries had room for improvement despite seeing off Exeter to remain the only unbeaten side in the division.
“The last performance we were more consistent throughout than we have been in the first couple of games,” he said.
“We’re happy with the energy, spirt and fight in the team. It’s a good sign and a good characteristic to have in a new team, but there is plenty to improve in our rugby.
“When you have got some new folk at your club and trying to establish partnerships and new relationships, the longer they are together the better.”
Samoan flanker Theo McFarland is not available after concussion at Exeter but Maro Itoje should start after training with England this week.
Tom Parton and Sam Spink remain a few weeks away but McCall said there was a chance Ollie Hartley could be back well before Christmas as his recovery from an anterior cruciate ligament (ACL) injury was ahead of schedule.
