Sheffield United are keen to tie John Fleck down to a new contract to fend off Premier League suitors led by Arsenal, Football Insider has learned.

The central midfielder, 28, has been integral to the stunning rise through the divisions of Chris Wilder’s team and his red-hot form has alerted top-flight rivals.

A United source has told Football Insider that the club are planning to offer Fleck a new and improved deal ahead of the summer.

Fleck’s current contract, signed in September 2017, is due to expire in the summer of 2021.

Bramall Lane chiefs want to avoid a situation in which the free-scoring midfielder enters the final 12 months of his deal, leaving them vulnerable to losing him in the next window.

This comes after Football Insider revealed last month that Arsenal are plotting long-term moves for the Rangers academy product as well as his right-back teammate George Baldock.

Fleck is valued at £20million by United, a measure of his dramatic progress under Wilder and how he has settled into the Premier League.

Arsenal’s interest in him intensified after he scored a late equaliser in the 1-1 draw between the two clubs last month, his fifth Premier League goal of the season.

Signed on a free contract in the summer of 2016, Fleck has played comfortably the best football of his career at Sheffield United.

The former Rangers and Coventry City man has made 162 appearances for the Yorkshire outfit, scoring 13 goals and supplying a hugely impressive 41 assists from midfield.

In other Arsenal news, it can be REVEALED that the club are keen on making Premier League 23-year-old their marquee summer signing.