While in 2-3 years I would completely agree, lets be clear Spurs needs to get out of the brick we are in. When RDZ had to get a result(s), Palhinha was one of the first names on the team sheet, that in itself is why it makes sense to go for him now.
Do I see him as an automatic starter? no, but he has a part, both from a capability perspective (personally I think he and VDV are critical to making RDZ's game work at highest level for now, we will get occasionally exposed with our commit and the positioning and pace of those two will be important) and personality. We talk about wanting players with fight/give all, then just say upgrade them with no thought to impact to team. Gray needs to learn to train/play from players like Palhinha.
He's made it clear he would like to come back, the manager has repeatedly said he wants him, if the club fudges this up over 5M, we will be back circling the fudging drain next season.