The highly-rated 17-year-old is reported to have rejected the offer of a new contract with the Catalan giants and that could open the door for a move to England.
Sanabria still has 18 months left to run on his current deal but there is a buy-out clause in it meaning any club that offers £2.5million are in with a chance of doing a deal.
Arsenal were reported to be leading the race, ahead of Italian outfit AS Roma but Chelsea are now in the hunt for his services and could hijack any potential swoop.
A goal apiece from James Tomkins and Luka Milivojevic handed Crystal Palace a crucial 2-0 win over Huddersfield at the John Smith's Stadium on Saturday evening.
Manchester United bounced back from their Champions League exit as they beat Brighton 2-0 at Old Trafford on Saturday night to reach the FA Cup semi-finals.
Tottenham reached the FA Cup semi-finals after they cruised to a 3-0 victory over Swansea in their quarter-final clash at the Liberty Stadium on Saturday.
Premier League basement club West Brom squandered the lead as they suffered a 2-1 defeat to Bournemouth at the Vitality Stadium on Saturday.
Chesterfield boss Jack Lester felt his side were unlucky not to claim all three points after their 1-1 draw at Cheltenham.
New Swindon manager Phil Brown revelled in his side's victory at Cambridge in his first game in charge.