Fiorentina 2-4 Borussia Monchengladbach (agg 3-4)

Stindl scored the first hat-trick of his career

Borussia Monchengladbach forward Lars Stindl scored a hat-trick as the German visitors fought back from 3-0 down on aggregate to eliminate Fiorentina.

The Italians, who won 1-0 in the first leg, led inside the first 30 minutes in Florence through Nikola Kalinic and Borja Valero.

But Stindl converted a 44th-minute penalty, then struck twice more in the space of eight minutes after half-time.

On-loan Chelsea defender Andreas Christensen added the fourth.

Monchengladbach won 4-3 on aggregate to join Manchester United in the last 16. The draw takes place on Friday (12:00 GMT).

Nabil Fekir scored a hat-trick as French side Lyon won 7-1 against Dutch side AZ Alkmaar to cruise through with a 11-2 aggregate win.

Italian title-chasers Roma lost their 16-game unbeaten home run in a 1-0 defeat by Spanish side Villarreal, but still progressed 4-1 on aggregate.

Another La Liga side was also ousted as Athletic Bilbao lost 2-0 at Cypriot champions Apoel Nicosia, who reached the next stage with a 4-3 aggregate win.

Ajax, Besiktas and Anderlecht are among the other sides also joining Gent, who saw off Tottenham, in the last 16.