Pep Guardiola is paid £15.3m annually closely followed by Jose Mourinho at £15m per season. Outgoing manager Arsene Wenger earns £8.5m, Jurden Klopp £7m with Antone Conte and Rafa Benitez both on £6.5m.
Sacked Sam Allardyce was earning £6m at Everton while Mauricio Pochettino is the poor man on just £5.5m per season.
Pellegrini was earning just £4.2m per year when he left Manchester City in 2016 but will want more than double that to return to the Premier League. Rafa Benitez would want £8.5m per year to join West Ham plus huge bonuses.
David Moyes was recently paid just over £2m for six-months of work, both Slaven Bilic and Sam Allardyce earned annual packages worth around £3m per year.
The West Ham board will need to invest big to land a big name manager of either Pellegrini or Benetiz.