Selby, 37, reached his 27th career ranking final after defeating China's top player Ding Junhui and compatriot Shaun Murphy back-to-back on Saturday.
Although the referee had already blown the final whistle, VAR awarded a penalty. Then Bruno Fernandes, who had conceded the penalty that gave Brighton the initial lead, smashed the ball into the roof of the net.
Dortmund responded with furious attacks but Gikiewicz was alert enough to keep out promising chances from Thomas Meunier and Erling Haaland before the break.
Celta meanwhile will put their faith in Aspas, who has already scored three goals this season and will be a handful for the Barca back line.
"It is time to make changes, without any kind of constraints," Autuori said in a statement published on the club's official website.
Persepolis will meet Pakhtakor in the quarter-finals at the Jassim Bin Hamad Stadium on Wednesday.
Both teams created and missed chances in the first half and made life a little easier in the season, with no one breaking the deadlock.
The reigning Portuguese champions have offered 15 million euros (around 18 million U.S. dollars) to prise the 23-year-old away from Porto Alegre, Globo Esporte said on Wednesday.
In Sunday's other fixtures, Sassuolo enjoyed a 4-1 victory over newly-promoted Spezia, while Hellas Verona edged past Udinese 1-0. Enditem
Julen Lopetegui's side who were slightly unlucky to lose to Bayern Munich in the European Supercup in midweek, fell behind to Salvi Sanchez's opener for the recently promoted side, but hit back strongly in the last 25 minutes to take all three points thanks to goals from Luuk de Jong, Munir and Ivan Rakitic (another player to leave Barca this summer).
With the epidemic being effectively controlled, fans were allowed back into the stadiums from August 22, which is a credit to Chinese football in such a special period.