Why Barcelona are letting Gundogan re-join Man City

So Manchester City have now reached agreement with Ilkay Gundogan over a free transfer from Barcelona. So is it a no-brainer for City to bring back a player they let go just 12 months ago? And why are Barca willing to allow one of their best players to leave so soon?  Host: Ayo Akinwolere With: Sam Lee and Pol Ballús Executive Producer: Adey Moorhead Producer: Mike Stavrou Learn more about your ad choices. Visit megaphone.fm/adchoices