The Serie A side are set to complete the signing of Brazilian centre-back Leo Duarte from Flamengo but are on the hunt for further reinforcements.Tuttomercatoweb reports that the Rossoneri could be willing to let Mateo Musacchio leave if an offer of around €18 million comes in.They are therefore looking for another centre-back and met with Lovren’s team on Thursday.But the Croatian, who has also been linked with Roma, would be a costly option as he earns more than €4 million per year at Anfield and is likely to command a transfer fee of €15-20 million.Milan are therefore considering other options and apparently contacted Celtic to enquire about the availability of 21-year-old defender Kristoffer Ajer.The San Siro outfit have focused on youth with their transfer dealings so far this summer and the Norwegian would fit their preferred profile of a young player with the potential for improvement.Now read...EH?9 really weird things you might have missed in football this summerGUNNEREverything Arsenal fans need to know about record signing Nicolas Pepe