AUSTRALIA'S best young goal keeper Mathew Ryan could make the switch of a lifetime after accepting an offer to trial for English team Tottenham Hotspur.

The 20-year-old has won back-to-back young player of the year awards and was named as the A-league's best goal keeper this season.

A week to impress Tottenham officials ... Matthew Ryan. Credit:Getty Images

Ryan will be given a week to impress at White Hart Lane, London, and if he can convince Tottenham Hotspur's new manager, Andre Vilas Boas, of his worth it would mark a huge step for the one-time Plumpton junior.

It is thought that the Mariners would be seeking between $500,000 and $1 million for their goal keeper who, despite his relatively modest 181-centimetre frame, is widely considered as the long-term successor to Mark Schwarzer for the Socceroos.