If I might add a comment on your question, I’d say we need crossing abilities at both wings. Our main striker is quite good at headers (shock alert), and he is not getting enough good crosses imo. With this argument in my mind, I’d lime winger that delivers crosses, and hopefully end product, but primarily crosses.
Among crossing RWs there’s Gelson, who is quoted to be on his way to the Emirates, on a free, but there’s a chance we could hijack that transfer. Others worth a shout is said to be heading to West Ham, Felipe Anderson. Another option is Willian. Not the sexiest options, but I really do think we’d be a whole lot better, and extremely dangerous from the right. This again would make our attack more dynamic and the opposition would struggle if our wingers poised a real threat from the line.
Summing up my argument with regards to Bale, his crossing would be somewhat easy to anticipate like Young’s crosses (which haven’t bore many assist).
Naturally, at RW Bale would drift inwards, and switch with the LW at times, but my question would be: is that the kind of player our squad need post Alexis? I guess it’s quite obvious from this post that I was all for Perisic last year, but now I feel the left is filled, so now I would look for a similar option at right, and at the same time stopping Rom from playing RW like he did this spring.