Toto Wolff admits he is weighing up the pros and cons of allowing Mercedes to supply Red Bull with engines in the future.

Red Bull's future is uncertain, with its strained relationship with engine current supplier Renault looking increasingly likely to come to an end after 2016 as the French outfit sets its sights on purchasing Lotus and becoming a constructor once again. That would leave Red Bull without an engine supplier after next season.

Red Bull has been linked with a Mercedes engine deal in recent weeks, a partnership which would make sense for the Milton Keynes team with Honda's plight this season highlighting the difficulty for a new manufacturer to join the grid at a competitive level. While Renault and Honda have struggled in the V6 era Mercedes has won 25 of the 29 races since the start of 2014.

Wolff, the executive-director of Mercedes-Benz Motorsport, admits such a partnership would be attractive to both parties.

"There is an agreement in place [between Red Bull and Renault] and we do not want to interfere in legal matters between the parties," Wolff told La Gazzetta dello Sport. "However, if I wear the hat of Mercedes-Benz Motorsport and I speak on behalf of Formula One, I must say that it is an attractive option because it would tie a brand that has appeal among young people with one that is winning.

"But of course, as head of the team, it's not really ideal to strengthen a competitor who knows how to build winning cars."

Earlier this month, Renault Sport F1 Cyril Abiteboul spoke to ESPN about the likelihood of a split from Red Bull if an unwillingness to work together continues - calling such an eventuality a "wasted opportunity" for both parties.