Spanish publication Mundo Deportivo, Barcelona have declared Sergi Roberto as a non-transferable player, having rejected a €40 million bid from Manchester United for the Spaniard. "Chelsea and Monaco are weighing up offers", reports Sky Sports.
Roberto started 39 games in all competitions last season, netting one goal and chipping in with six assists.
Sergi Roberto surprisingly arrived into the first-team setup as a right-back and established himself, despite being a natural midfielder.
Along side United, Chelsea was considering making a move for the 25-year-old player.
Barcelona are adamant that the versatile midfielder, who can also play right back, will not be sold following the £198m departure of Neymar to PSG.
The rumour mill had Jose Mourinho already opening talks with Roberto, too. The Blues were looking to activate the player's supposed release clause, especially after failure in the pursuit of Danilo and Benjamin Mendy.
The same report also claims that Chelsea are considering a move for Roberto, with Antonio Conte increasingly keen to add to his squad before the transfer window closes.
Antonio Conte is desperately trying to further strengthen his squad as he knows he needs more new recruits ahead of Chelsea's return to the Champions League and Roberto would offer top class competition for Victor Moses.