As of my last knowledge update in January 2022, Mbaye Niang’s contract extension with AC Milan until June 2017 is accurate. However, please note that player contracts and transfer situations are subject to change, and new developments may have occurred since then.
To obtain the most recent and accurate information on Mbaye Niang’s contract status or any potential transfer talks involving Everton or other clubs, I recommend checking the official website of AC Milan, reliable sports news sources, or the official social media accounts of the player and the clubs involved. Transfers and contract extensions are often covered extensively in the sports media, and official announcements are made by the clubs themselves.