Monaco boss Thierry Henry said coming up against former Arsenal team-mate Patrick Vieira as a coach felt "really weird".
Henry and Vieira were part of Arsenal's 'Invincibles' side that went a full Premier League season unbeaten under Arsene Wenger in 2003-04, while the pair also won the 1998 World Cup and Euro 2000 with France.
The French duo reunited as coaches for the first time at Stade Louis II, where Monaco and Nice played out a 1-1 draw on Wednesday.
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When asked how it felt to come up against Vieira, Henry told reporters: "Weird, really weird.