The former NFL star, 36, caught up with PEOPLE at the American Century Championship presented by American Century Investments in Lake Tahoe, where he opened up about the possibility of a fourth child with his wife Kylie Kelce, 32. The couple is already parents to three girls: Wyatt, 4½, Elliotte, 3, and Bennett, 15 months.

“It’s not my decision,” Jason tells PEOPLE. “We’ve talked about, before having kids, having certain numbers but I think whatever Kylie’s comfortable with.”

“We’ll figure it out,” the former Philadelphia Eagles star adds, regarding the parents already being outnumbered by their children.

Jason Kelce and family at training camp. Kylie Kelce/Instagram

Jason’s comment comes just days after his wife Kylie also alluded to the possibility of having a fourth baby.

“We’re rotating through clothes we bought for our first daughter now to our youngest, so we have gone through a lot of hand-me-downs,” Kylie told New York Magazine website The Strategist.

“… The Hanna Anderson PJs last forever. We still have some packed up, just in case there ends up being a fourth,” the mom of three added. “It is the best investment.”

Kylie also spoke about a favorite item of hers being a Zoe Chicco necklace displaying the initials of her daughters, gifted to her by her husband Jason, “as a reminder of our three greatest creations.”

“He got me the W when Wyatt was born, and I didn’t take it off for four years until I updated it with the other two kids’ initials,” she recalled. “It’s something I wear every single day. It’s part of their Itty Bitty collection and has these tiny initials of our girls on it. I’m really into understated, dainty jewelry over big pieces.”