The Argentine, who didn't as far as to say his contract extension was signed, made it clear there were no issues with the negotiations and he had been working '100 per cent' on preparations for what will be his third season at Elland Road but his first ever in the Premier League.
"I will be working the next season at Leeds United," he said.
"Everything has been sorted, it is definite."
When asked about the delay between the end of Leeds' Championship title-winning season and agreeing a contract extension, Bielsa insisted there were no snags and it had simply taken as long as it needed to.
"Like in every negotiation nothing is done until it's actually done," he said.
"There is nothing of importance [holding it up], I have been working 100 per cent since the celebrations of promotion finished."
Bielsa takes Leeds to Premier League champions Anfield on Saturday for their first top flight game since 2014.