Red Card - The Detroit Black Jacks, #1

Enemies with benefits that would get them sent off! In an attempt to make things right with her sister's memory, Melanie finds herself at her ex-brother-in-law's door to yank the former star player back to reality-and into the manager's job for a new professional soccer team in her hometown. Metin's life is ten nil down. He craves reconnection with his late wife's family, but the agony of facing his own demons is almost too much to bear.
So when Melanie turns up to drag him back to the game he once loved, their mutual anger and grief turns into explosive chemistry. But Melanie relegates their relationship to avoid burgeoning emotions, which means time is up on their sworn-enemies-to-lovers arrangement. Luckily, Metin is determined to grind it out in an attempt to make her admit that she loves him as much as he does her.