Leicester have had a £25m bid for Islam Slimani turned down by Sporting Lisbon, this is according to Sky sources.
Sporting Lisbon rejected the bid in the early hours of Tuesday morning as they only want £34m for the striker.
Islam Slimani is keen on moving to the Premier League champions, who look set to sign his Sporting team-mate Adrien Silva.
Slimani scored 27 times for the Lisbon club last season.
Sporting have already brought in a possible replacement for Slimani by signing Bas Dost from Wolfsburg for an undisclosed fee.
The 27-year-old, who joined the Wolves from Heerenveen in 2012 and scored 36 goals in 85 Bundesliga appearances, made his final appearance for the German club in their 2-0 win at Augsburg on Saturday.