Three English teams are hoping to progress to the last 16 - Fulham, Everton and Liverpool - with all of them holding a one-goal advantage.
Everton, though, have been hit by a late problem.
The Toffees' Nigerian players Joseph Yobo and Yakubu became stuck in Amsterdam on Wednesday night after visa problems prevented them from travelling with the rest of the squad for Thursday's clash with Sporting Lisbon.
Defender Yobo and striker Yakubu were due to arrive in Lisbon on a supporters' flight from the Dutch capital at 4am this morning and travel to the team's Dom Pedro hotel, but the mix-up casts doubt over their participation.
An Everton spokesman said: 'There is a minor issue over visas but it's all being sorted out and they should be available.'
Should Yobo not make it, the door could be open for Phil Jagielka to make his return to first team action sooner than expected, after 10 months on the sidelines with a knee ligament injury.
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