If Mifsud was to sign, he would join fellow Maltese striker Daniel Bogdanovic at Oakwell.
The 27 year old striker has score 20 goals in 60 appearances for Malta and 16 in 84 for Coventry, including one of the four in Coventry's 4-1 win at Oakwell on the opening day of last season.
Derby are also rumoured to be interested in 'The Mosquito'.