Removals of transactions involving unfinished job (8)

'removals' is the definition.

'transactions involving unfinished job' is the wordplay.
'transactions' becomes 'deals' (deal is a kind of transaction).
'involving' indicates putting letters inside.
'unfinished' means to remove the last letter.
'job' becomes 'post' (post is a kind of job).
'post' with its final letter taken off is 'pos'.
'deals' enclosing 'pos' is 'DEPOSALS'.

'of' is the link.