Former Premier and Hawthorn president Jeff Kennett says the tenure of Collingwood president Eddie McGuire at Collingwood is "a long time" and sometimes good leadership requires new thinking.

With news that McGuire would seek another three years at the Magpies, Kennett said clubs like Geelong, Collingwood and Hawthorn had been rebuilt by strong and bold leadership, but shorter tenures gave the chance for renewal.

"I've had some discussions with Ed about this in the past," Kennett said on SEN. "Ed has been wonderful for Collingwood, there's no doubt about that ... those clubs were winless and broke and they have been built into the powerhouses of today.

"Having said that, I do think that there is a time. There is a time for the individual and a time for the club and you have to introduce new ingredients, new thoughts, new practices.