''Interchange is one of my topics that we have been discussing on the way around. I am sure we will be discussing that,'' Anderson said yesterday. ''I wouldn't say there are any major concerns. There are issues that we have been discussing.

''Protecting players from injuries has been a long-standing issue, congestion is a topic that we have been discussing and keeping the game a great free-flowing spectacle that is one of its core attributes.

''This coincides with us having completed our first round of visits to all of the club coaches and leadership groups. We are going to give the AFLPA executive an update of where we have got to.''

Several players have told The Age they fear the AFL is particularly keen to have two on the bench and two substitutes in the belief this would further tire players, therefore reducing the number of players with the energy to get to stoppages, thus reducing the number of stoppages, to make the game more free-flowing.

When pressed on the possibility of a two-and-two interchange being introduced, Anderson replied: ''I have got no doubt the interchange is one of the many topics that we are discussing. It's not the only thing that is related to congestion.''