The winger will join Villa for £2.5 million this summer after the club fought off relegation.
The Manchester City winger, 26, joined Villa on loan for the rest of the season in January, with the deal reported to have included a clause which guaranteed the move became permanent if the Midlands outfit retained their Premier League status.
However, despite the pending switch, it remains to be seen how much Sinclair will feature at Villa Park going forward, having seen manager Tim Sherwood demote him to a bit-part role in recent weeks.
The former England Under-21 international made a solid start to his loan spell, netting three goals in four starts and three substitute appearances, but has failed to get back in the line-up since being sidelined for the first half of April with a hamstring problem.
He made just an eight-minute cameo in the weekend’s 6-1 thrashing at Southampton and failed to even make the bench the previous game, as Villa beat West Ham United 1-0.
Furthermore, having been signed under former boss Paul Lambert, Sherwood has admitted that he was not aware there was an agreement in place, telling the newspaper: “I think there’s a discussion to be had at the end of the season. I’m not sure if it [a permanent deal] is cast in stone and I haven’t got confirmation of that.
“Is there a decision to make on him? Yeah. The injuries interrupted him but we have changed the style and the way we play a little bit. He’s been training, still a good lad, a good player. He hasn’t become a bad player or anything like that. I think if we go back to wide players then Scott will be an automatic choice to play there.”
Nevertheless, Sinclair will be somewhat relieved to be escaping the Etihad Stadium, having endured a nightmare stint in Manchester.
After making a £6.2 million move from Swansea in August 2012, the former Chelsea product would go on to make just three starts in two-and-a-half seasons with the Citizens, as injuries and poor form became a regular occurrence.
He also struggled to make his mark during last season’s loan spell at West Bromwich Albion, featuring just 11 times, and made a meagre four cameos for a total of 29 minutes for Manuel Pellegrini’s side over the first half of this term before heading to Villa.
If he can get back to the form he showed at Swansea, which had some tipping him for a senior England call-up, then the £2.5 million fee will look like a veritable bargain but, for now, there are still questions over where he fits in Sherwood’s side.