indeed, there are rumors that Avintia wants to replace Rabat with Marini. However, the team's desire to do so was unavoidable, because Rabat is the son of one of Avintia's sponsors. Maybe they don't want to lose the financial supply from Rabat Jewelry, sp they decided to keep Rabat until the contract expires in 2021. On the other news, there is a possibility that Rossi's team, Sky Racing VR46 reportedly will participate in the MotoGP event in 2022, it could be that Marini will become a rider for the Rossi team.
For Marini i think it's a good beginning at Avintia