Leeds United are set to announce their new kit supplier this month with adidas the hot favourite to secure a landmark deal, Football Insider understands.

The Championship giants’ current five-year agreement with Italian company Kappa is due to expire at the end of the season.

A Leeds source has told Football Insider that extensive discussions have been held with sportswear giants, including adidas, Nike and Under Armour.

Adidas are the frontrunners to design and manufacture the shirt kit, with the club expected to make an announcement over a blockbuster deal later this month.

The precise value of the off-the-pitch agreement will depend on whether Marcelo Bielsa’s side win promotion from the Championship to the Premier League.

The current agreement with Kappa is worth around £2million a year, dependent upon shirt sales.

That pales into insignificance compared to the Premier League giants like Man United and Liverpool, whose new deal with Nike could earn them estimated revenues of £70m a year.

Leeds can start to compete with established top-flight clubs, if not the absolute elite, if they are competing in next season’s Premier League.

United’s pulling power is the highest in the Championship and their value to sportswear companies will be transformed if they can build on their second place in the division and secure promotion.

There has been discussions in recent months between United chiefs and various sportswear companies as the club look to enter the global rather than just domestic market.

In other Leeds United news, it can be REVEALED that the club have agreed a £2.5m deal after fee finalised.