Arsenal have been drawn against Napoli, even though Chelsea will face Slavia Prague in the Europa League quarter-finals.
Villarreal take on fellow Spanish side Valencia with Portuguese group Benfica playing Germany’s Eintracht Frankfurt.
The very first and second legs will be played on 11 April and 18 April, with the semi-final draw maintaining Arsenal and Chelsea apart ought to they get that far.
Arsenal boss Unai Emery is chasing a fourth Europa League title as manager just after 3 successive wins at Sevilla.
The Gunners reached the final-eight just after overturning a three-1 deficit to beat French side Rennes three- in the second leg of their final-16 tie.
Need to Chelsea win the Europa League, as they did in 2013, it would offer you them an option route to subsequent season’s Champions League.
Maurizio’s Sarri’s side are presently sixth in the Premier League, 3 points behind fourth-placed Arsenal, but with a game in hand.