Allegedly and conceivably dropping No 1, retaining rest of soccer team? (10)

I believe the answer is:
ostensibly
'allegedly' is the definition.
(thesaurus)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for ostensibly that I've seen before include "Seemingly" , "to all intents and purposes" , "on the face of it" , "Evidently" .)
