What does the cryptic crossword clue "Choose a way in to catch fighter in the ring (7)" mean?

The definition is "fighter in the ring". The wordplay uses a homophone (sounds like). sounds like ‘pick a door’ The answer is PICADOR.

Choose a way in to catch fighter in the ring (7)

Times Cryptic #28741 | 12 Across | 2023-10-23 flower