well ideally we'd have someone who is attacking and defensive.
but I meant more that we need one that is similarly insane as dani so we don't always have to play dani to ensure we have that sort of attacking presence from FB.
and then we have the option to go absolutely insane and play both if we're really chasing a game.
Yes, firstly it's too risky to count on Alves being able to play 4500 minutes every season. What he did this year was crazy and as he ages it is unlikely that he will be able to do the same. A dynamic LB could then play, with a defense-minded player at RB when Dani isn't playing.
Secondly, the possibility of injuries must always be factored in. If Dani is out and Sylvinho leaves, then we will have no creativity coming from the wings, due to the restrictions of a 4-3-3.
And thirdly, as Meta said, if we're really chasing a game it's always possible to play both, them serving as midfielders but with the defensive skills required to stop counter-attacks. Perhaps a safer bet than playing with 2 or 3 defenders and asking midfielders to track back.
