The temperamental Togo ace, whose loan at White Hart Lane last season was a success, is yet to start since rejoining the club in a £5million permanent switch from Manchester City in August.
Spurs have cited a succession of injuries - hamstring, back and thigh. Internet messageboards claim he is suffering from spitting out his dummy syndrome.
But AVB added: "He had an injury which took him out for six games then another injury took him out for two games.
"From the 11 we've played, I think he's been out for eight. In the games when he was available he showed the quality striker that he is."
Asked if the rumours doing the rounds that he refused to play in last month's Europa League clash at Maribor are untrue, AVB insisted: "No, we're quite happy with his attitude.
"We have the injury records for you if you want."