Priest found in chapel indefinitely (3)
'priest' is the definition.
'in chapel indefinitely' is the wordplay.
'in' says the answer is hidden in the clue.
'ELI' is hidden within 'chapel indefinitely'.
'found' acts as a link.
(Other definitions for eli that I've seen before include "Man", "- Wallach, US actor", "Old Testament high priest", "Old Testament priest, the prophet Samuel's teacher", "OT high priest".)