Emmanuel Adebayor recently joined Crystal Palace.
The former Arsenal and Tottenham striker joined Crystal Palace in the January transfer window as a free agent.
Roberts believes that the 31-year-old Togo international striker could have been a far more successful player if he had the character and attitude like Spurs star Harry Kane.
Adebayor has played for the likes of Arsenal, Manchester City, Tottenham and Real Madrid (on loan), but the general feeling is that he has not fulfil his potential.
The 31-year-old is a proven Premier League goalscorer, but he has not been consistent enough.
Playing for Palace gives the former AS Monaco striker another chance to show that he has still got what it takes to play at the highest level.
In three Premier League appearances for the Eagles so far this season, Adebayor has scored one goal and created two chances.
The striker has a pass accuracy of 71% and a shot accuracy of 60%, and has won 10 headers, three dribbles and two tackles.