Sauber is staying quiet on rumours that billionaire Lawrence Stroll is in talks over potentially investing in the team.

Reports surfaced over the weekend linking Stroll with investment in to Sauber, with the Canadian ranked as the 815th richest man in the world by Forbes having made his money in the fashion industry, most recently with Michael Kors.

When contacted by Crash.net on Tuesday, Sauber declined to comment on any potential talks with Stroll who, coincidentally, is the father of Ferrari development prospect Lance Stroll, whose single-seater career has been rapidly advanced in recent seasons.

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Ferrari-engined Sauber - which has yet to score a point this season - has been seeking investment to secure its long-term future in the last few years, with a number of Russian companies coming in to partnership with the team last year. However, Sergey Sirotkin's planned promotion to a race seat in 2014 was subsequently aborted.

Crash.net understands that Sauber had been previously contacted by Caterham over the winter, ahead of the 2014 season, prior to Tony Fernandes selling the team this year, regarding a merger, but those talks were unsuccessful.