With De Bruyne set for surgery on a hamstring injury, Guardiola said he was speaking to director of football Txiki Begiristain about their options in the window.
“We maybe need to add someone else,” Guardiola said. “My opinion is I like a small squad. But the blow from Kevin changes the perspective. He is a very important player and it is not one or two weeks.
“It’s four or five months, he’s 32 years old and he needs to be physical because of the way he plays physically. So we have to reflect a bit on the squad and think about what we have to do but we have to control.
“But we are not the only ones spending a lot of money in the last few years.”
