I really hope Lowry retires a Raptor. There really isnt any need for him to go to Championship contender as he already has one. He would be ideal to bring in the new blood and continue a winning tradition.
He along with FVV, OG, Siakam, Birch, Flynn, Trent, Gillipsie and Boucher provides them a solid foundation to build on with a high draft pick this draft and a free agent or two with all the available cap space freed up.
The Raptors can become a contender in the East again rather soon. Remember they are the only team in all of the NBA not playing in front of their fans at their home. They went through an ordeal with COVID which they received no help from the league at all. Top both of those with the injuries they have had. This team easily should have been in the playoffs this season.
Bring him back and continue to augment the roster with players to make the team better on top of what they already have.