Mifsud has impressed against Manchester United and Blackburn in the Carling and FA Cups respecively this season; but Coventry owner Ranson insists he has every intention of keeping him.
"Our intention is to keep Mifsud and build a side that is capable of promotion as soon as possible," Ranson told BBC Radio Coventry & Warwickshire.
Mifsud has attracted interest from Premier League sides Wigan and Reading, who are reportedly ready to offer £3million for the Maltan international.