Former European champions Manchester United and AC Milan will meet in the round of 16 of the Europa League.

Friday's draw sends Milan star Zlatan Ibrahimovic back to the English club where he played for two years, including the 2016-17 season when United won its only Europa League title.

Seven-time European Cup winner Milan has never won the Europa League, or its predecessor the UEFA Cup -- the only continental title it has yet to win.

Manchester United's manager Ole Gunnar Solskjaer, center, gives instructions from the side line during the English Premier League soccer match between West Bromwich Albion and Manchester United at the Hawthorns stadium in West Bromwich, England, Sunday, Feb. 14, 2021. (Naomi BakerPool Photo via AP)

Manchester United's manager Ole Gunnar Solskjaer, center, gives instructions from the side line during the English Premier League soccer match between West Bromwich Albion and Manchester United at the Hawthorns stadium in West Bromwich, England, Sunday, Feb. 14, 2021. (Naomi BakerPool Photo via AP)

Arsenal will face Olympiakos and goes back to Piraeus for its second straight game in the competition. Arsenal used the Olympiakos stadium as a neutral venue on Thursday to beat Benfica 3-2 in the “home” leg in the round of 32.

Two-time UEFA Cup winner Tottenham plays the first leg at Dinamo Zagreb, and 1992 winner Ajax is at home first against Young Boys of Switzerland.

Some venues could change due to national restrictions on travel and quarantine during the COVID-19 pandemic.

Tottenham's manager Jose Mourinho reacts during the Europa League round of 32 second leg soccer match between Tottenham Hotspur and Wolfsberger AC at the Tottenham Hotspur Stadium in London, England, Wednesday, Feb. 24, 2021. (Julian FinneyPool via AP)

Tottenham's manager Jose Mourinho reacts during the Europa League round of 32 second leg soccer match between Tottenham Hotspur and Wolfsberger AC at the Tottenham Hotspur Stadium in London, England, Wednesday, Feb. 24, 2021. (Julian FinneyPool via AP)

Molde is unlikely to play in Norway for the second leg against Granada of Spain. Molde played its round-of-32 “home” game against Hoffenheim at Villarreal’s stadium in Spain.

First-leg games are on March 11 and return matches on March 18.

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Arsenal's Pierre-Emerick Aubameyang celebrates after scoring his sides third goal during the Europa League round of 32, second leg, soccer match between Arsenal and Benfica at Georgios Karaiskakis stadium, in Piraeus port, near Athens, Thursday, Feb. 25, 2021. (Antonis NikolopoulosEurokinissi via AP)

Arsenal's Pierre-Emerick Aubameyang celebrates after scoring his sides third goal during the Europa League round of 32, second leg, soccer match between Arsenal and Benfica at Georgios Karaiskakis stadium, in Piraeus port, near Athens, Thursday, Feb. 25, 2021. (Antonis NikolopoulosEurokinissi via AP)

 Young Boys' Jordan Siebatcheu, left, scores his side's opening goal against Leverkusen's goalkeeper Niklas Lomb during the Europa League round of 32, 2nd leg soccer match between Bayer 04 Leverkusen and Young Boys Bern in Leverkusen, Germany, Thursday, Feb. 25, 2021. (AP PhotoMartin Meissner, POOL)

Young Boys' Jordan Siebatcheu, left, scores his side's opening goal against Leverkusen's goalkeeper Niklas Lomb during the Europa League round of 32, 2nd leg soccer match between Bayer 04 Leverkusen and Young Boys Bern in Leverkusen, Germany, Thursday, Feb. 25, 2021. (AP PhotoMartin Meissner, POOL)