Football transfer rumours: Man Utd set Mainoo price tag; Chelsea eye Luis Diaz | OneFootball

90min rounds up the latest transfer news, rumours and gossip circulating around the world...

Ahead of what promises to be a dramatic summer rebuild, Manchester United are prepared to sell academy graduate Kobbie Mainoo to generate 'pure profit'. The England international would cost around £80m and has attracted admiring glances from Chelsea and Bayern Munich. (Fichajes - Spain)

Barcelona's Spanish trio of Gavi, Fermin Lopez and Pedri were not in favour of the move to bring Marcus Rashford to Catalonia on loan for the second half of the season. Manager Hansi Flick backed the transfer which never materialised. (El Nacional - Spain)

Despite Real Madrid's willingness to table a record-breaking bid, Arsenal have no intention of selling star centre-back William Saliba. (RMC Sport - France)

Sunderland's 17-year-old sensation Chris Rigg has attracted concrete interest from Arsenal, Liverpool and Manchester United. (CaughtOffside)

North London rivals Arsenal and Tottenham Hotspur are both sniffing around Barcelona's versatile forward Ferran Torres. (Fichajes - Spain)

The Gunners have also joined Tottenham - and Newcastle United - in the race to sign Crystal Palace's highly rated centre-back Marc Guehi. (CaughtOffside)

Much to the frustration of Manchester City, Newcastle have made it abundantly clear that Bruno Guimaraes is going nowhere. (Fichajes - Spain)

Bruno Guimaraes is a wanted man / Stu Forster/GettyImages

Chelsea are eyeing up a sensational move for Liverpool forward Luis Diaz. No fee has yet been set but the Blues are prepared to make a "competitive" offer. (Antena 2 - Colombia)

In the event that Chelsea can't secure a deal for the Colombia international, they remain interested in Borussia Dortmund forward Karim Adeyemi. (CaughtOffside)

Without the financial muscle of years gone by, Manchester United may be forced to target free transfers next summer. The Premier League giants are interested in deals for the Lille duo of Jonathan David and Angel Gomes, Bayer Leverkusen centre-back Jonathan Tah as well as Bayern Munich's Leroy Sane and Everton striker Dominic Calvert-Lewin. (Fichajes - Spain)

United could face competition for Tah from Barcelona, who have identified the German as a priority target this summer given Hansi Flick's lack of faith in Ronald Araujo. (El Nacional - Spain)

Real Madrid have already begun negotiating a new contract for Vinicius Junior which is expected to make him the best-paid player at the club. (Relevo - Spain)

Spurs boss Ange Postecoglou is just one game away from the sack and could be on his way out of N17 if Tottenham lose to Aston Villa in the FA Cup on Sunday. (GIVEMESPORT)

Regardless of their perilous managerial situation, Tottenham are ploughing forward in their pursuit of Southampton's Tyler Dibling and Crystal Palace midfielder Adam Wharton. (Football Transfers)