​Joe Hart's hopes of making England's World Cup 2018 squad have taken a huge blow as his loan side West Ham United are preparing to replace him with back-up option Adrián. 

The Spaniard impressed during the Hammers' 2-1 loss to Manchester City on Sunday and David Moyes is preparing to drop Hart on a permanent basis as his side desperately fight for survival.

As reported by the Sun, Hart was unable to play against his parent club on Sunday and was forced to sit in the stands as Adrián produced the kind of display Hammers fans had been crying out for all season.

England v Iceland - Round of 16: UEFA Euro 2016

England have a number of keepers vying for the number one spot, with Everton's Jordan Pickford and Stoke City's Jack Butland the current frontrunners.

Unrest has been growing among England fans over the future of Hart as the team's number one since Euro 2016 - where a disastrous campaign saw England eliminated in the last 16 against a plucky Iceland side. 

Hart's errors were central to the shock defeat and his goalkeeping error against Wales in the group stage also gifted a goal to Gareth Bale.

Things haven't improved for Hart at West Ham this season, where the loanee has conceded 30 goals in 14 appearances. 

His dramatic slump in form has caused concern among fans of the Three Lions, with many supporters calling for a new man between the sticks in Russia this summer.

West Ham are currently 19th in the table, just a point ahead of Crystal Palace at the bottom of the league. The Hammers have been in woeful form, winning just two of their opening 15 matches, sacking former manager Slaven Bilic in November.

Moyes has a huge challenge ahead of him and dropping the ex-Shrewsbury Town man could be a positive step forward.