The Celtics in 24 are the only champions since the 1980's to win a championship without a MVP or DPOY on the roster (i.e. a player on the team had won it already). The odds of that happening again are thus very small. So either Tatum needs to win the league MVP, White needs to win DPOY, or they need to trade for that player.
Also, the Knicks are the only team left that doesn't have a dpoy or mvp on their roster. The Cavs have both (harden and mobley), the Thunder have the 2 time mvp, and the spurs have the dpoy. So that string will likely continue again this year.