We've got tons of people who can cover for RWB. Besides Cambiaso all alternatives are poor. But, is Weah a future starting RB/RWB for this side or will he be a versatile backup player? I am leaning toward the latter, so I'm not sure anymore about the RWB position. Splashing out money for a backup that will be shipped away a year from now does not seem sensible. Especially when we have Soule, McKennie, Iling Jr, Cambiaso, and so on, that can step in if Weah gets injured. Are we that much worse off without e.g. Holm? I'm not convinced.
If we are getting a RB/RWB, I want that one to be stronger than Weah. Since we're not in Europe I am not worried about match congestion, the problem will only arrive if he gets injured. Haven't checked his track record there.
Edit: I like Soppy as
@Osman suggested, perhaps not better than Weah but I fancy him and he can play on both flanks and has a cool name.