Sergio Perez says he is now 95 per cent sure he will be on the grid for the 2014 season despite McLaren's decision to replace him next year.

The Mexican will leave after a single season with the Woking-based team having failed to produce the kind of results that were expected - albeit with an underperforming car.

The late nature of the announcement that he would leave McLaren cast doubt over Perez's future in the sport but with options still available at Lotus, Force India and with former team Sauber, the 23-year-old said he was confident about his chances of being on the grid again in 2014.

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"My future is definitely looking better than it was seven days ago, so we have some progress in that respect, which is positive," he was quoted by the Press Association. "But as we all know in Formula One, if you don't have a contract then there is nothing there, although I'm confident I will get a good seat that will keep me very motivated to achieve my dreams.

"I would say 95 per cent [I'll be in F1 next year]. But in Formula One to have the other five per cent is quite a lot. I might be here, I might not, but I'm pretty confident I will be here."

Perez added that a return to Sauber wouldn't cause any problems if it were to happen, despite him having decided to leave the Swiss team to move to McLaren at the end of last year.

"With Sauber, there are no issues between us, not at all. I always try and leave my teams on the best possible terms, as I am leaving McLaren.

"Life is very long and you never know where you're going to end up, so you have to try to be professional and a good person."