Sort of stop exchanging rook for bishop: what's left for you? (7)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

definition: a bequest is a legacy or inheritance left to someone R EQUEST=”Sort of stop”, exchanging R for B (rook and bishop in chess annotation) a ‘request stop’ is a train station where the train will only stop on request (it will continue past if there is no one coming on or off)