FFF,
I'd probably ask for the range of the converging ac & also listen to see if the ATCO is warning them of me.
Seeing as I'm on the right, if it wasn't immidiate (or there abouts), I'd see if the other ac is going to give way. This is all time dependant.
If the ATCO was not in contact & the threat was imminent, of course, I'd have to manouver.
As it's my right of way, I'd let them maouver 1st as I wouldn't want to match there actions. If not, I'll move.