McLaren's Lewis Hamilton indicated on Thursday he could leave a decision on his Formula One future until the end of the season.

The 2008 world champion, who has been backed by the team since he drove go-karts, is out of contract at the end of the year and there has been speculation about his intentions even if he is expected to stay put.

The 27-year-old Briton said at the Canadian Grand Prix circuit, where he won for the first time in an astonishing 2007 debut season, that he was focused entirely on the here and now.