Bernie Ecclestone does not believe that McLaren will be any happier with Renault power units, ahead of an impending switch from current supplier Honda.
McLaren looks set to drop Honda in favour of Renault after both Mercedes and Ferrari rejected approaches, whilst Toro Rosso is understood to be taking up McLaren's Honda supply, with Carlos Sainz Jr. moving to Renault as part of the overall deal.
It also means Fernando Alonso is likely to remain with McLaren, having reportedly threatened to leave if the team continued with Honda, which Ecclestone says is "super news".
"The Renault deal is all done," F1's chairman emeritus told the Daily Mail.
"Alonso staying is super news, but I can't see why McLaren will be any happier with Renault than they are with Honda.
"It wasn't Honda's fault things didn't work out, it was McLaren's. Every day they had a fight about everything, instead of working with them, which was a little bit stupid."
McLaren is expected to make an announcement this week confirming its 2018 plans.
