Celtic are gearing up for Thursday's crucial Europa League clash against Inter Milan, with the tie finely poised after a 3-3 first leg draw in Glasgow.
The first game at Celtic Park was a sensational affair, with Celtic roaring back from 2-0 down to earn a 3-3 draw thanks to John Guidetti's last-gasp equaliser.
Whilst the Swede took most of the plaudits for his late goal, it was new signing Stuart Armstrong who started the fightback.
The January arrival from Dundee United scored the first goal, before diverting the ball into the net for the second - though that one may go down as a Hugo Campagnaro own goal.
Fellow new arrival Gary Mackay-Steven also impressed against Inter, and both players figure to be huge parts of Ronny Deila's side not only in the second leg but for years to come.
After strong starts to their Celtic careers following their deadline day moves from Dundee United to Glasgow, defender Virgil van Dijk has praised both players, as reported by the Daily Express.
"For Stuart to score on his debut and in his first game in Europe is fantastic and Gaz has done very well too. They’ve both made a good contribution so far," said the Dutchman.
Armstrong, 22, and Mackay-Steven, 24, were big January signings for Celtic, and their performances in Scotland and in Europe just serve to show why Deila was so desperate to bring the pair to the club during the winter transfer window.