Russian businessman Suleiman Kerimov did come in contact with Pune businessman Hasan Ali Khan seven years ago, but has had "no dealings" with him since.
Brazil playmaker Willian and has agreed terms to join Chelsea from Russian club Anzhi Makhachkala, the Premier League side said on Sunday.
The measures announced by the Treasury Department were also aimed at 17 senior Russian government officials. The state-owned Russian weapons trading company, Rosoboronexport, which has long-standing ties to Syria and its subsidiary, Russian Financial Corporation Bank were also targeted under new sanctions.