Pleased with charter (5)
I believe the answer is:
lease
'charter' is the definition.
(synonyms)
'pleased with' is the wordplay.
'with' indicates the answer is hidden within the clue.
'LEASE' is hidden in the letters of 'pleased'.
(Other definitions for lease that I've seen before include "Tenancy contract" , "Contract for use of land or building" , "Contract of tenure" , "From legal document" , "Tenancy agreement" .)