Tottenham could be set to see their fixture with Dinamo Zagreb in the Europa League changed due to UEFA regulations.
Jose Mourinho's side eased their way into the round of 16 stage in the competition following an 8-1 aggregate victory over Austrian outfit Wolfsberger.
Their reward is another tie that looks good on paper against Croatian champions Dinamo Zagreb, with both matches set to be played next month.
Spurs were drawn out second for the tie, meaning the second leg would be set to take place in north London, but those fixtures could now be reversed.
Arch-rivals Arsenal, who did things the hard way with a narrow victory over Benfica, were also drawn second for their round of 16 clash against Olympiacos.
UEFA regulations state that the two teams cannot both play at home on the same night, meaning that changes are likely to occur.
"If more than one club from the same city, or within a radius of 50km (31 miles) of each other, is taking part in any of the UEFA club competitions and/or plays in the same stadium, and if the association and the clubs concerned explicitly declare when entering the clubs that their matches cannot be played on the same day or on consecutive days, the UEFA administration may alter or confirm dates and kick-off times in accordance with the principles set by the Club Competitions Committee."
As Arsenal won the FA Cup last season and are domestic cup winners, they are given priority in this instance and will retain their home tie in the first-leg.
However, UEFA's website appears to have 'confirmed' the fixtures for the next round of matches with both Spurs and Arsenal noted to be playing at home on the same day.
It remains to be seen whether this is an error or if the restrictions that do not allow fans to attend matches mean that the above rule is not in effect.