That’s according to Spanish news outlet Don Balon who say the versatile star is considering his future at the Nou Camp.
It’s suggested he already has offers on the table from Manchester United and the Blues.
Serie A champions Juventus are also vying for his signature.
Barca lost Neymar to Paris St-Germain for a world-record £199m fee earlier this summer.
And Messi – who is a hugely influential figure at the club – is desperate for Roberto to stay put.
The 25-year-old has a tantalising £37.5m release clause which has helped fuel speculation about his future.
“Lionel Messi is concerned Sergi Roberto could quit Barcelona”
Roberto bagged a goal in Barca’s 2-0 triumph over Real Betis on Sunday night.
But he didn’t feature against Real Madrid in the Super Copa first-leg and Don Balon say he’s concerned first-team opportunities will be limited again this season.
Roberto can be deployed in midfield, at full-back or as a winger.
He played primarily at right-back last term and acquitted himself well.
However, the Spain international prefers to play in a central attacking role.
Since making his debut in 2010, he’s struggled to establish himself as a regular starter.
Roberto has made 96 appearances for the club, scoring one goal.