France forward Kylian Mbappe must sign a new contract if he wants to remain a Paris Saint-Germain player this summer.

With Mbappe reportedly refusing to extend his contract, PSG club president Nasser Al-Khelaifi has come out defiantly.

The Qatari supremo states that if Mbappe does not renew, then he will be sold for a mega fee this summer, as PSG have no intention of losing him on a free transfer in a year's time when his contract expires.

"Our position is very clear," said Al-Khelaifi.

"If Kylian Mbappe wants to stay - we want him to stay - he needs to sign a new contract.

"We cannot let the best player in the world right now leave for free. That is impossible.

“This is a French club and, as he has said, he is not planning to leave for free.

"If somebody has changed his mind, it is not our fault."

Real Madrid, Manchester United and Manchester City are among clubs monitoring the situation.