Ranked Rewards (DeRank)

I was Masters rank but I deranked back to Diamond 3 but Im too exhausted to grind back up, since I hit the rank beforehand will I still get the end of the season rewards or do I have to rank back up? I knew in the old ranking system you can get the rewards as long as you hit it but I’m confused with the new system if its still like that.

I think you have to finish the week off (any)as that rank…