Emmanuel Emenike is due to fly over to England to complete his move to West Ham.
The Hammers and Fenerbahce have now agreed a loan fee for the Nigerian striker after discussions on Wednesday.
And the striker is due to arrive in London over the next 24 hours to complete a medical ahead of signing.
The Premier League leaders are interested in signing the Super Eagles captain, but CSKA want a fee closer to their $27m (£18.9m) valuation of the forward.
It is believed that Musa has a $32.5m (£22.8m) buyout clause inserted in his current deal which expires in 2019.