Chelsea confirmed on Thursday that ex-West Ham goalkeeper Robert Green has joined the side on a one-year deal. The former England international is expected to act as third-choice next season behind Thibaut Courtois and Willy Caballero.

Many Blues fans are unhappy with the capture of Green, given that he has not played Premier League football since 2015. He is also 38 years of age and failed to make a single appearance for Huddersfield Town during his spell with the Terriers last season.

Many also best remember Green for the error he made during the 2010 World Cup when England played against the USA in a group stage encounter. Green fumbled a long-range effort from Clint Dempsey while England were leading 1-0; the game ended 1-1.

Below, however, are a number of reasons why Green may have been a good signing for Chelsea:

1. He did not cost anything

Green arrives as a free agent and the club did not have to spend any money on signing him. New manager Maurizio Sarri could use funds on bolstering other departments within the club. He will also not be among the high earners at Stamford Bridge.

2. He can still play at a high level

A number of fans are concerned that Green can no longer play at the highest level. Yes, he did fail to establish himself at Huddersfield last season. However, he was in top form for Leeds United in the Championship during the 2016-17 season and helped the Whites to challenge for Premier League promotion before they ultimately fell short under Garry Monk.  The Championship is a physically demanding league and if Green could still deliver quality performances there, he could surely be decent in the unlikely event that Chelsea may need to use him for a few games.

3. He adds experience to the team

Green made his professional debut 19 years ago and has over 600 appearances to his name. He can act as a mentor to younger players within the squad.