Jan Vertonghen admits Tottenham must address the problem of goals they concede if they are to salvage something from their disastrous season.
Spurs crashed out of the FA Cup on Wednesday, humbled at home on penalties by Premier League strugglers Norwich.
It was the competition identified as their best chance of ending a 12-year trophy drought.
'We wanted to do better and we are just disappointed,' said Vertonghen. 'It is a big disappointment. We started well and I think we had chances to kill the game but we didn't.