Usain Bolt's fledgling soccer career at the Central Coast Mariners is taking a quick break, with the sporting superstar to leave the country for a week.

In a statement on Saturday, the A-League club said Bolt would jet out to an unnamed location on Sunday.

"After completing his first three weeks of training with the Central Coast Mariners, the club wishes to advise that Usain Bolt will be abroad from Sunday 9 September to Sunday 16 September for a previously planned commitment," the Mariners said in a statement on Saturday.

"This commitment was agreed between Usain Bolt and the Central Coast Mariners before his training period commenced with the club."

Bolt made his debut for the club when he came on in the closing stages of a trial match against a Central Coast select side earlier this month.

He played just over 20 minutes in the 6-1 win.

"I think the big fellow did OK," Mariners coach Mike Mulvey said of Bolt after that game.

"He was on a hiding to nothing a little bit nervous, but I'm quite happy with him.'