It's not defensive skills that Murillo lacks, it is defensive attitude. When he wants to he can defend well, but there are times that look like he just can't be bothered putting himself in a position to lock down space.
Can Armas change that or will he always be a defensive liability.
Regulator's thought about moving him to RW is interesting.
I shy away from re-positioning guys, and even more so when RW is a position I'd hope we could target for an elite, big $ signing.... but he's just 22, one of our best at taking on defenders 1 v 1, and I really can get behind the idea of him and Duncan together on that side. It doesn't hurt that he'd finally give some modicum of height to our offense.