Please arrange to be resting! (6)
I believe the answer is:
asleep
'be resting' is the definition.
(I've seen this before)
'please arrange' is the wordplay.
'arrange' is an anagram indicator.
'please' anagrammed gives 'ASLEEP'.
'to' is the link.
(Other definitions for asleep that I've seen before include "(Of a limb) numb" , "in bed?" , "out like a light?" , "Please be at rest, oddly" , "Conked out" .)