Rodri’s had one mostly good season in three; Juanma Lillo’s arrival saw the general compactness of the team defensively improve over the past two years, something which his departure could now compromise. Also factoring in Cucurella’s pending arrival - he’ll likely be used as a wide, overlapping fullback rather than inverting like Cancelo and Zinchenko did last year, requiring the midfield anchor to sweep up the space he’ll vacate and just general cover more ground generally. Phillips is better equipped for that.