A factor in Flintoff's decision to quit Test cricket at the end of the Ashes series - is the money available to him in Twenty20 tournaments.
Morris is likely to have the support of captain Andrew Strauss, head coach Andy Flower and the England selectors.
Sean Morris, chief executive of the Professional Cricketers' Association, however fears trouble unless the international schedule is reduced.
'I can see issues with the ECB wanting to restrict the players' appearances in non-international Twenty20 cricket,' Morris was quoted as saying in the Sun.
'I can also see the day when we have freelance cricketers, with players turning down England contracts. That's the way the market will go and that's very dangerous.
'Flintoff has already made a choice to concentrate on one-day cricket and other players will be making a similar choice. That doesn't bode well. We want the best players to appear in Test cricket.
'I believe the solution is for less international cricket and proper windows to be created for events like the IPL.
'This will allow the players to earn without cutting across their England commitments.'