The 18-year-old fell foul of the powers that be at Barcelona and was allowed to move on to Lazio in Italy for a knockdown fee of around £250,000 in 2011, after it was reported a youth-team prank was the final straw for the Catalans.
The Reds had the Spanish-born player, who is of Senegalese origin, watched in Lazio’s 1-0 victory over Legia Warsaw in the Europa League last Thursday and are expected to continue to keep tabs on the youngster who is under contract in Italy until 2017.
Javi Gracia said it was always going to be an uphill battle for Watford after conceding so early against Liverpool on Saturday.
Schalke 04 boss Dominico Tedesco paid tribute to goalkeeper Ralf Fahrmann after his 76th-minute penalty save proved crucial in a 1-0 win over Wolfsburg.
Mattia De Sciglio stunned that Juventus were shocked to be held to a goalless draw with SPAL on Saturday.
Sunderland have suspended midfielder Darron Gibson with immediate effect after he was charged with drink driving.
Jose Mourinho's recent bad frame of mind was still present despite Manchester United beating Brighton 2-0 at Old Trafford on Saturday, a result that puts them into the last four of the FA Cup.
Mohamed Salah continued his astounding goalscoring form on Saturday, hitting four goals as Liverpool thrashed Watford 5-0 at Anfield.