I remember when Abou Diaby joined Arsenal in the January transfer window three seasons ago.
Here was a French U21 international who was tall and rangy and clearly likely to provide comparisons with Patrick Vieira. That he chose us over Ch*vski also confirmed a place in our affections.
Some of his performances come to mind; a cameo at the Bernabeu, his first goal against Villa and then that despicable challenge at Sunderland that put him out of action for about a year.
Diaby has never made more than 15 appearances for Arsenal, and his injury in pre-season again hampered his development and ability to establish himself in the first team.
Comparisons with Vieira may be slightly wayward, because if there is a weakness in his game, it's his inability to tackle with any competency. His tackle at Bolton last season comes to mind.
But there is something about Diaby that makes me wonder if he is a missing link in Arsenal's masterplan.
Apart from taking some of the creative weight from Cesc Fabregas' shoulders, Diaby makes things happen.
His ability to dance his way past two or more opponents creates the space that carves opponents apart. Last night's victory and that against Everton are great examples.
Arsène Wenger has suggested that Diaby could be the perfect link man between midfield and defence, which raises questions in my mind.
Can we afford to play him in midfield alongside Cesc without someone with more defensive competency, or does Wenger see him almost as a second striker, putting him in competition with RVP, Carlos Vela, Nic Bendtner and so on?
Wenger said: "He can play nearly everywhere, Diaby. From midfield going forward, he can play everywhere. He has been out for nearly three months now. I believe Diaby can be a player who can play between midfield and the strikers and has good penetrating power. It was his first start and he had a very good game."
I'm not convinced Diaby is best utilised on the left, where he mostly has to cut in (think about that goal against Derby last season, though and it whets the appetite) but he showed last night that his left foot is not all bad.
If he could add defensive steel to his game to provide cover for Cesc's forward runs, we would have our very own Michael Essien on our hands.
Staying fit could well be Diaby's biggest challenge if he is to become a lynchpin in our side but if the last week is anything to go by, he could have a massive part to play for us this season.
And let's be honest, Aaron Ramsey didn't do his chances of more games any harm either, did he?