Rangers announced on Thursday that Scotland defender John Souttar had signed a new contract until the end of next season, with the option of a further year.
“It’s important that we have leaders, to continue with them, not just on the pitch but off the pitch,” Rohl said of Souttar, 29.
“He leads the group. It’s important to have a core together to build something around.”
Rohl has injuries to contend with this weekend and suggested there would be “two or three changes”.
However, midfielder Connor Barron and defender Derek Cornelius are making progress in their returns to fitness and could feature in March.