Trending @Infosys; Need Suggestions

So Recently I was released from a project owing to budget constraints from the client because I had a higher billing rate even though I was the critical and high performing resource. I had sent a resignation email on December 15 ish around and the manager didn’t accept it until I was released. Now I have a new project with new manager (yet to be onboarded).

I got a call from the company X and I had told them since I got released from the project I will be joining around Feb end. But now I don’t know how to manage that since I will be onboarded soon for a new project. I have an interview with this company X next week.

Now sure how to handle this :/ Any suggestions are highly appreciated. Thanks in advance :)