Reports have revealed that Knapp would receive at least $66,000 (£40,000) in consulting fees on top of a $2.1m severance package from NTL, which operates in the UK, but is listed in the US.
Knapp is being paid $6,000 a day for consulting work at NTL, the FT reported.
The need for a study of executive pay was highlighted by the head of its compensation committee, Jeffrey Benjamin, who said such a study must be undertaken before an employment contract with Simon Duffy, the newly-appointed chief executive can be agreed.
Duffy is currently being paid £385,000 a year based on his contract agreed to when he was hired as chief operating officer.
Harrison Beale & Owen will (HB&O) have a new chairman and managing director at the helm for 2017
Satvir Bungar promoted to managing director in the mergers and acquisitions team
Carolyn Brown appointed as the first head of client legal services practice RSM Legal
UK senior partner Phil Verity has been elected for a second term at Mazars