I can't comment on "Bloom didn't want him".
However, his signing was certainly very unusual for Albion (from a financial perspective). The reporting at the time stated that RDZ called Fati five times to persuade him to come. Bloom himself made it clear how influential RDZ had been in the player...
Seeing as you brought up the U-9s.....
There are a couple of lads in this season's U-9s whose fathers played together as Albion scholars around 20 years ago!
Since you brought him up.....
His son Keenan has been in the Leeds United youth system since the age of 9 and came on as a sub for their U-21s against our U-21s three weeks ago.