For the wing (if we decide we have to sign one) then it should be someone that are explosive, pacy, skillfull enough to beat people either with pace and skills. We lacks it that our game has been too one dimensional and has no real disruptors to break opponents shape and drag people over the place to find holes for teammates.
Olise simply is not that and we have too many already that dont seems to have the intensity, pace, athleticism to win duels and be that nuisance to others. Remember when we have Ronaldo, Rooney, Nani that create chaos and utilise the width to make the pitch wider and create space for others.