23 - And the window slams shut...

This week on Defending in Numbers our host Rob Armstrong is joined in the studio by guests Ali Maxwell and pod debutant Alex Stewart. The transfer window has come and gone, so we run the rule over all the big moves in and out at Premier League sides. We also try to figure out the rules around cup-tied players. And we take a look at Pietro Pellegri, the Italian teenager who has signed for Monaco from Serie A side Genoa.