McGrath recently returned to the Australia side after an enforced absence looking after his sick wife.
He had a good ICC Champions Trophy but doubts linger about his ability to bowl prolonged spells now that he approaching his 37th birthday.
The seamer is renowned for his metronomic accuracy he was less effective in the 2005 Ashes series but did miss Tests through injury.
He has taken over 550 wickets at 21 in an illustrious Test career and it is significant that England won the two Ashes Tests he missed with injury in 2005.
He was back to his best in the first Test in Brisbane, taking 6-50 and was one of the main reasons that Australia won the series 5-0. He took 21 wickets in the series at an average of 23.90 to end his career with 563 Test victims.
As he winds down towards retirement, he has two more series to play, with the Commonwealth Bank tournament against New Zealand and England, and the World Cup in the West Indies.
McGrath bowls at little more than a brisk medium pace, but he was former England captain Michael Atherton's nemesis and dismissed him 19 times in Tests.
He made a big impression at Worcestershire in 2000 and in 14 first-class games he took 80 wickets at 13.21, including an outstanding innings return of 8-41 against Northamptonshire, as well as making his first ever first-class half-century (55 against Nottinghamshire.)
He also played a few games for Middlesex in 2004 and has hinted he could return to England for another stint in county cricket.
McGrath announced he would retire from international cricket after the 2007 World Cup.