Sporting took third despite losing to Francisco Alcacer's header and an own goal from former Barca defender Jeremy Mathieu in a low-key clash at the Camp Nou.
Villarreal, Arsenal, AC Milan, Red Bull Salzburg and Lazio are already confirmed as seeds, having topped their Europa League groups.
There are still some issues to be resolved in Wednesday night's Champions League games.
Indeed, it may turn out that only two qualifiers come from outwith that elite, with Turkish champions Besiktas already through in Group G and only one of Basel or CSKA Moscow likely to advance in Group A.
PARIS: Manchester United and Juventus were among the sides to clinch a place in the last 16 of the Champions League on Tuesday, while Bayern Munich gained a measure of revenge over Paris Saint-Germain.
Leipzig still has a chance to progress on its European debut but needs a favour from Monaco at Porto in Group G. Leipzig, which is level on points with Porto, hosts group victor Besiktas on Wednesday and will only go through if it secures more points than the Portuguese team. Even a defeat for Spurs and a Real Madrid win would not see the Spaniards win the group, as Tottenham have the edge in the head-to-head.
Over the past five years, though, Premier League clubs have found it much more hard to make much headway in the competition.
Brady faces long road to recovery
The Ireland wide man will sit out the next four to six months after the nasty knee injury, which requires surgery. The Dubliner was left writhing in agony following an awkward but accidental collision with Harry Maguire.
Murdoch 'to be Disney CEO' after Fox deal
Comcast Corp., which owns NBCUniversal in Universal City, also figured as a potential buyer for Fox's media assets, Reuters said. At present, Disney now own the rights to the Marvel Cinematic Universe and Fox own the X-Men and Fantastic Four franchises.
Files being held for ransom by hackers
A year earlier, the Horry County Schools in Conway, South Carolina, were hacked for $10,000 in bitcoin ransom. In recent years, companies including Equifax and Target, and also government bodies were attacked by hackers.