We won't know for sure what the long-term effects of a year in Getafe have had on Mason Greenwood and his career for a while yet. But the short-term effects on the club he has joined are there for all to see.
Last season their football was hard to watch and they were fighting relegation. Now they are entertainers and shock candidates for the European places.
It's not all about Greenwood. Talented coach Jose Bordalas has returned for a second spell at the club he managed to the Europa League last-16 in the 2019-20 season.