Diaby was talented but too lightweight for the Premier League. We did well to get our money back for him.
I reckon 6 goals and 10 assists in 25 starts suggests that is probably pretty assumptive.
If Diaby was as good as his stats suggest, he would have started more games, surely. Ultimately, Unai preferred to get his money back.
To be fair, Diaby's form dropped off but Bailey kicked on superbly that season. Baileys stats were off the charts, either starting or from the bench. Diaby finished strong too. Unfortunately when they played together they tended to occupy the same space. That was an exceptional Villa team attacking wise, peak Watkins, Bailey, Luiz, Tielemans, McGinn. Duran and Diaby coming off bench. Started to leak goals like a sieve, mind.