Multiple sources are reporting that Conrad Harder is the subject of an offer from Rennes, who have made a move to sign one of their top transfer targets. The forward, currently at Sporting, is now at the centre of negotiations between the two clubs - while it remains to be seen whether the opening offer will be enough for the team to part with their man. Until a fee and conditions are finalised, the deal remains vulnerable to disruption - especially if Chelsea, Milan and Leipzig decide to make a formal offer of their own in the coming days. So far this season, Rennes are averaging 1.29 goals scored per game (9 goals /7 games), close to the Ligue 1 average. Conrad Harder would be expected to help them push higher and add more variety in attack. Alongside this, Sporting are said to be exploring Ioannis Konstantelias with Rennes likewise connected to Brian Brobbey. Looking for Rennes transfer rumours? Follow us on Twitter @PlayerSwitchCom for more rumours just like this.