Character seen with drink in hub (7)
I believe the answer is:
airport
'hub' is the definition.
(transport hub)
'character seen with drink' is the wordplay.
'character' becomes 'air' (air can mean a character or mood).
'seen with' means one lot of letters go next to another.
'drink' becomes 'port' (port is a kind of drink).
'air'+'port'='AIRPORT'
'in' is the link.
(Other definitions for airport that I've seen before include "Aviation complex" , "Where to take flight" , "duty-free location?" , "... [GAULLISM] its founder perhaps" , "Charles de Gaulle maybe" .)