I mean seriously look at this, and I am not shooting the messanger, but there is no way that Will is headed back to PRA, as of Bright's retirement the team is looking at the young guns of Jacobson and Stanaway.
https://prnt.sc/gjplze
They got the GRM possibly expanding part right, but as of 2018, even GRM said they weren't looking at that and budget will probably not allow it in the near future, I don't care who wrote it, just because they say it doesn't mean its true, look at Mr Phelps, he goes to events and says the most ridiculous things such as mustang in 2018, neither of the Ford teams have anything set yet
https://prnt.sc/gjpmlm