JMNT(i)
50 And then, abandoning (deserting) Him, they (= His disciples) all fled.
51 Now a certain young man, having thrown (or: loosely wrapped) a fine linen sheet around [his] naked body, had been following-on together with Him and they kept on trying to grab a strong hold of him, so as to seize him.
52 But he, leaving the fine linen sheet behind to drop down (or, perhaps: in their hands), fled naked.