Tiger’s Eye by Kenna McClare

Daniel Page is a hitman in New York City. When a kill goes wrong and his boss finds out he’s a tiger shifter, Daniel is commanded to turn his fellow hitmen into tigers. He refuses. Unfortunately for Daniel, his estranged daughter Meredith carries the gene as well, and the men he works for know how to find her.
But Meredith has a guardian of her own…a lion shifter by the name of Catherine, a woman who makes Daniel burn. It’s an all-or-nothing gambit; gain a family, or lose everything in one fell swoop.

Daniel doesn’t intend to lose.