Ferrari boss Maurizio Arrivabene says his team would have no problems supplying engines to rival Red Bull next season.
Arrivabene, whose team currently supplies engines to Sauber and Manor, says he is not worried that Red Bull may emerge as a strong rival as a result of giving it the Italian squad's engines.
"It is very difficult to talk about other people," said Arrivabene. "In theory they have big names, with [Adrian] Newey as chief designer and it is easy to think that if you give them the engine they will build a scary chassis, which means they will be really competitive.
"Concerning my team, my engineers and aerodynamicists know their own jobs. For that reason I don't have a problem, and competition is nice when you have a stronger competitor.
"This doesn't mean tomorrow morning we will give our engines to Red Bull or Toro Rosso.
"But I don't see any kind of problem to give our engine to any other team or be scared of the competition before they start.
"This is not the right spirit of competition or what Ferrari represents. We fight with everybody."
Toro Rosso good Ferrari relations
Toro Rosso boss Franz Tost insisted, however, that his team has a contract with the French manufacturer for 2016.
"As you know we have a Renault contract, the rest we will see," Franz Tost told Motorsport.com.
"We have a good relationship with Ferrari, but this does not mean that we will be partners in the future.
"We will see, the future will show us. Currently we are contracted to Renault."
Good news for Manor
Mercedes' decision to rule out a supply deal to Red Bull may mean Manor will end up using the German power units next year.
The team, currently running 2014 Ferrari engines, is considering its options for 2016, and is now on pole position to land the Mercedes deal if one becomes available.
Additional reporting by Adam Cooper and Franco Nugnes