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What you might not already know about the play-offs

Get in the mood for tonight's UEFA Champions League play-off openers with some key facts.

Emmanuel Adebayor greets İstanbul Başakşehir boss Abdullah Avcı
Emmanuel Adebayor greets İstanbul Başakşehir boss Abdullah Avcı ©AFP

Napoli v Nice
The clubs met in pre-season friendlies in 2015 and 2016, with Nice winning 3-2 at home and Napoli prevailing 3-0 at the Stadio San Paolo 12 months later. Nice's star man Mario Balotelli misses the game through injury along with summer signing Wesley Sneijder

İstanbul Başakşehir v Sevilla
Istanbul Başakşehir's Emmanuel Adebayor and Gaël Clichy played in a 3-0 win for Arsenal against Sevilla in the 2007/08 UEFA Champions League group stage.

Hapoel Beer-Sheva v Maribor
Maribor midfielder Marwan Kabha is the third Israeli to play for Maribor after predecessors Sintayehu Sallalich and Dudu Biton.

Celtic and Astana met last season
Celtic and Astana met last season©Getty Images

Celtic v Astana
Celtic prevailed when these sides met in last season's third qualifying round. A 1-1 draw in Kazakhstan was followed by a 2-1 success for the Scottish club in Glasgow; Leigh Griffiths scored in both games, with Moussa Dembélé's 90th-minute penalty in the second leg proving decisive. Yuri Logvinenko registered Astana's first-leg goal.

Olympiacos v Rijeka
This is Rijeka's fifth consecutive season in Europe, with their most successful campaigns in that run coming in 2013/14 and 2014/15, when they contested the UEFA Europa League group stage. Olympiacos are aiming to reach the group stage for an 18th time.

Kick-offs 20:45CET unless stated