RB is quite literally the most covered position we have on the whole pitch. We have 3 of them, plus Gomez, plus 3 different midfielders that can and have played there. No other position has this.
How is it negligent?
Now if we could get a loan, sure, but who is available?
If we could get a CB who can also play RB, then sure, I'm interested.
Sounds like this guy could have been that, but Sunderland can't do it. s*** timing, but so was Frimpongs injury.
Longer term, there's tons of evidence to suggest Gomez (age and injuries) Bradley (injuries) and Frimpong (may play further forward) are not our RB solutions, but that's for the summer when other players may actually be available.