The 25-year-old midfielder has missed Villa's past two games with a hamstring injury.
The 25-year-old suffered a hamstring injury while playing for Senegal earlier this month and has since been forced to sit out both last weekend’s 3-2 defeat at Leicester City and Saturday’s 1-0 home defeat to West Bromwich Albion.
Speaking to the club’s official website following the Baggies clash, in which Saido Berahino’s first-half strike condemned Sherwood’s men to their second straight Premier League defeat, the Villa boss did not want to make excuses but did stress that the former Lille man’s absence over the past two games has been a big blow.
“The game can't be quick enough for Idrissa,” said Sherwood. “He loves it. He's been a real miss for us [but] you have to just get on with it.
“Everyone club has injuries. You have to pick yourself up. You have to use the squad you have. You won't hear me crying about it.”
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Villa have now dropped down to 17th in the Premier League table after taking just four points from their first six games and are without a top-flight win since the 1-0 opening day victory at Bournemouth.
Nevertheless, after bringing in 11 new players in the summer following the sales of star men Fabian Delph and Christian Benteke, Sherwood was quick to stress that he is not concerned about his team’s form at this stage of the season.
“I am not just saying it in hindsight but I think I said after the first game, when we won, that this is a transition period,” he added. “It's going to be a lots of ups and downs.
“If our points had married our performances then we should have a lot more than four, but it is what it is - and we haven't. We have to take that on the chin and put it right.
“I can look those boys in the eye and see they are on side and they are as eager as I am to put it right - and we will.”
Their next opportunity to “put it right” will come in Tuesday night’s Capital One Cup third round tie against arch-rivals Birmingham City, when another defeat would certainly set alarm bells ringing.
Having Gana back for the match would prove a significant boost given the midfield bite he provided in his first four appearances for the club but, with a trip to Liverpool coming up next Saturday, it remains to be seen whether the £9 million summer signing will be risked.