How Knicks' Moussa Cisse offer sheet works, and what deadline Mavericks have to match it

The New York Knicks want Moussa Cisse on their roster for next season.They've put pressure on the Dallas Mavericks to decide whether they want him more.On Saturday, the Knicks agreed to a two-year contract offer sheet with Cisse, according to ESPN's Shams Charania.Cisse comes from the Mavs, and he's a restricted free agent, which brings about this offer sheet process.The 6-foot-11 center was a rookie in 2025-26 and averaged 4.5 points and 5.7 rebounds per game in 38 appearances for Dallas.The Knicks lost Mitchell Robinson this offseason and may see Cisse as a potential replacement, if the Mavericks let him go.MORE: Caleb Wilson fires a subtle shot at AJ Dybantsa, Darryn PetersonHow does the Moussa Cisse offer sheet work?When a player is a restricted free agent, like Cisse, their previous t