The win means Frankfurt are now second in the group with the ball in their court in terms of qualification for the knockouts after Standard Liege and Vitoria drew. As for Arsenal, they're still almost certain to qualify, but they'll have to wait for the final match to secure their spot. Since they beat Standard 4-0 in their first fixture, they'd have to lose by five goals in the reverse to miss out. In the meantime, Arsenal are back in domestic action against Norwich, while Frankfurt travel to Mainz this weekend.
The expression 'a game of two halves' really rings true here.