When he played in the U-21 Euros last summer you could tell he was one of the weaker links in the team.
He looked uncomfortable in terms of going forward and was always to slow in terms of thinking to be effective. When Álvaro Odriozola played he looked much better and more comfortable more so than Bellerin.
Sure Roberto can be sketchy at times in defending and doesn't have that explosive pace, he's clearly much much better than Bellerin in so many areas. Bellerin's just doesn't have what we need for a RB and he would look so out of place with Spain as well.