Celtic's opponents in the second qualifying round of the Champions League:

STJARNAN (Iceland)

Formed: 1960

Manager: Runar Pal Sigmundsson

Key player: Gunnar Nielsen, the former Motherwell goalkeeper

Stadium capacity: 1000 seated, 400 standing

Last season: Won first ever Icelandic title courtesy of a stoppage-time penalty in final game European pedigree: First season in Champions League. Last year, in maiden Europa League campaign, knocked out Bangor City, Motherwell and Lech Poznan before succumbing 9-0 to Inter.

Miscellaneous: Stjarnan first came to wider prominence via a series of imaginative goal celebrations that included catching a fish, 10-pin bowling, and giving birth to a football.

Inverness Caledonian Thistle's opponents in the second qualifying round of the Europa League:

ASTRA (Romania)

Formed: 1921

Manager: Marius Sumudica

Key player: Denis Alibec, once on the books of Inter.

Stadium capacity: 8500

Last season: Finished fourth.

European pedigree: Third season in Europe. Qualified for Europa League group phase last year by beating Lyon in the play-off round. Subsequently drew 1-1 with Celtic at home and lost 2-1 away.

Miscellaneous: The club was based in the town of Ploiesti until 2012 when owner Ioan Niculae relocated them to Giurgiu, 80 miles away.

Aberdeen's opponents in the first qualifying round of the Europa League:

SHKENDIJA (Macedonia)

Formed: 1979

Manager: Shpetim Duro

Key player: Junior, a Brazilian striker

Stadium capacity: Tie likely to be played at national stadium in Skopje that holds 32,580

Last season: Finished third.

European pedigree: This is their fourth ever season in Europe. Yet to win a tie.

Miscellaneous: The club has strong ties to Albania with fans often singing the Albanian national anthem at games.

St Johnstone's opponents in the first qualifying round of the Europa League:

ALASHKERT (Armenia)

Formed: 1990

Manager: Abraham Khashmanyan

Key player: Vice-captain Ararat Arakelyan is an experienced Armenian international.

Stadium capacity: 6850. Alashkert share their ground with rivals Ulisses.

Last season: Finished fourth.

European pedigree: This is their first ever season in European competition.

Miscellaneous: Alashkert have the second-lowest co-efficient of all the Europa League sides.