Trouble for Mclaren is that Renault engines unless they suddenly make the best engine doesnt get them into the top 3 teams. Unless they have a better car than Red Bull. Unlikely.

That was originally the one hope with Honda. That being a one team engine supplier, they would produce a cracker and put Mclaren at the front.

With such limited engine options these days its hard to reach the front. The best engine is Mercedes and you will never get a better car than the Mercedes really.