Clue: Footballer in 1926, right halfback (6)
Answer: NEYMAR
Explanation: Definition: Footballer
(General) **NEY** (indicated by 19) + <=**RAM** (indicated by 26). The *right halfback* part of the clue tells us to reverse the right half of the solution. 
*Marshall Ney was a French soldier suring the Napoleonic Wars, and the Brazilian Neymar is one of the most prolific strikers in world football.