Midfielder James Lea Siliki has linked up with Cameroon ahead of their Africa Cup of Nations campaign.
The 25-year-old is part of a 28-man squad that also includes one-time Boro defender Harold Moukoudi.
Hosts Cameroon are in Group A alongside Burkina Faso. Ethiopia and Cape Verde, and begin their campaign against the Burkinabe on the opening day of the Nations Cup on 9 January.
The Indomitable Lions last won the competition in 2017 and are bidding for their sixth continental crown.
The tournament, which culminates with the final on 6 February, has been delayed for a year by the coronavirus pandemic.
Lea Siliki joined Boro on loan from Rennes during the summer transfer window and he has made 10 appearances, eight of which have come from the substitutes bench.