The Scottish Premiership leaders are preparing for the final stretch of the season with the overseas training camp. Meanwhile, Rangers physio Steve Walker is expected to join Hearts next season as manager Martin O'Neill looks to bolster his medical staff.
In other Scottish football news, Celtic faced protests during their 4-1 home defeat by Stuttgart, while Dundee United will continue with three forwards following Nikolaj Moller's recent sale. Aberdeen captain Graeme Shinnie has backed team-mate Dennis Geiger after his red card against Motherwell.