Mentorship is a big part of being a goalkeeper.

It could be the youngster is sitting on the bench behind the seasoned veteran, looking to pick up any pearls of wisdom they have for them.

Or the younger keeper is playing but there is a more experienced goalkeeper on the bench, ready to deputise when needed.

And the latter is the model that Chelsea favour.

Chelsea v Swansea City - Premier League

(Photo by Paul Gilham/Getty Images)

They first used it during Thibaut Courtois’ first season as the starting keeper, with regular, experienced keeper Petr Cech on the bench instead.

This system obviously worked quite well as Chelsea went on to win the league that season.

And this mentorship is being used once again following the arrival of Kepa Arrizabalaga.

Huddersfield Town v Chelsea FC - Premier League

Kepa Arrizabalaga signed for a world record fee of £71.6m (Photo by Robbie Jay Barratt – AMA/Getty Images)

Although he was signed before Kepa, Rob Green is the perfect mentor for the Spaniard.

Despite Green’s ups-and-downs, he has had a fantastic career – notching up more than 650 appearances and playing 12 times for England.

And this wealth of knowledge will speed up Kepa’s adjustment to the English game.

Arsenal's French player Thierry Henry co

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They both happen to be six foot two which enables Green to teach Kepa to cope with the physicality of the Premier League, which is something a lot of foreign goalkeepers struggle to deal with.

Green’s longevity as a keeper – he’s played first-team football since 1999 – should help Kepa learn to cope with the week-in week-out grind that Premier League brings.

Also, Green’s career has been filled with lots of highs and lows (lets not talk about him against the USA.)

His ability to continuously bounce back from set-backs or keep himself grounded is something that Kepa could learn a great deal from.

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