Leeds United are confident of extending the loan of Jack Harrison in a major boost to their Premier League promotion hopes.

The Championship leaders regard the winger, 23, as a vital member of Marcelo Bielsa’s team and are working to keep him beyond the end his original loan deal expiry.

Leeds have a good working relationship with the Premier League champions and a club source told Football Insider they are expecting no issues with extending Harrison’s deal until the end of July.

Harrison has spent the last two seasons on loan at Elland Road and the club have an option to sign him permanently in the summer.

The delayed transfer window – which is set to now open in August – means a full-time deal is now on hold.

Leeds are top of the table and seven points ahead of third-placed Fulham yet will also protect themselves by signing Harrison until the play-off final, which is provisionally pencilled in for 30 July.

Marcelo Bielsa has showed immense faith Harrison during his reign and he is instrumental to the team’s attacking plans.

At Leeds, he has remarkably started all 37 of their Championship games this season, scoring five goals as well as supplying seven assists.

Harrison has yet to play for Man City since joining from New York City in January 2018.

Another ex-City man is also at Elland Road after Ian Poveda signed permanently in the winter transfer window.

Bielsa’s mission to reach the Premier League is due to resume later this month, after the EFL announced a provisional restart date of 20 June.

Leeds secured five victories in a row before the season was paused in March, to hold a one-point lead over West Bromwich Albion.

In other Leeds United news, a sensational £28m-a-year deal is on the horizon.