Son Heung-min will be available for Tottenham's Premier League clash with Watford tomorrow.

The South Korea international has missed the last three games as he has been on international duty at the Asian Cup.

But a surprise quarter-final defeat to Qatar has allowed him to return to London quicker than expected and boss Mauricio Pochettino has confirmed he will be involved in the game with the Hornets.

"Son was good in training," the Spurs boss said. "Maybe after the third game he played in between Dubai and Emirates he felt empty because he was so disappointed, but here he's happy and today he had very good energy.

"We're going to decide if he will play from the beginning or the bench but I am very optimistic because he showed very good energy in the training session."

Moussa Sissoko is also back after a knee problem but Ben Davies (groin) is still out along with Harry Kane and Dele Alli.

The injuries to the duo have left Spurs short on options in attack, with the lack of transfer activity in recent windows exposed with Fernando Llorente left as the only realistic attacking option.

However Pochettino revealed he had been looking to strengthen, but any hopes of adding to his squad appeared to be diminishing.

"You know how we work at the last minute everything can happen," he said. "A few days ago I was very optimistic about a realistic option to sign but today I am not optimistic at all."