Sebastian Vettel has failed to deny rumours linking Mercedes chief Paddy Lowe with a move to Ferrari.
Another rumour in the Singapore paddock is that Mercedes are using an innovation that mimics active suspension that cannot be outlawed by the FIA until 2018.
"To what extent it is on the edge of legality or not, I cannot judge," Vettel is quoted as saying by Auto Motor und Sport.
"But for sure if you have something, you want to exploit it for as long as possible. We also have some clever things on the car."
As for the rumours linking Mercedes's technical chief with a move to Maranello, Vettel answered: "When someone of his calibre is available, of course you have to think about it.
"But to my knowledge he is not available."
Finally, Vettel was asked about F1's takeover by Liberty Media, and he said: "I think they will not have much influence on the cars.
"But if they do, I would like twice as many cylinders and less complicated electronics. And maybe air conditioning - we could really use it here in Singapore."
Vettel sits fourth in the drivers' championship ahead of the race in Singapore.
