Argument against team allowance is a factor (13)
I believe the answer is:
consideration
'factor' is the definition.
(thesaurus)
'argument against team allowance' is the wordplay.
'argument' becomes 'con' (con is a kind of argument**).
'against' says to put letters next to each other.
'team' becomes 'side' (I've seen this before).
'allowance' becomes 'ration' (I've seen this before).
'con'+'side'+'ration'='CONSIDERATION'
'is a' acts as a link.
(Other definitions for consideration that I've seen before include "Kindness" , "factor to be borne in mind" , "Bearing in mind - payment" , "Thoughtfulness - relevant factor" , "Study" .)