Jose Mourinho still believes he can deliver trophies to Tottenham even if he has endured a torrid start to life in north London.

The Portuguese was brought to the club to replace Mauricio Pochettino in November but it has been a struggle and his side face a battle just to qualify for the Europa League, facing a potentially decisive clash with Arsenal on Sunday.

In his defence, he inherited a tricky situation at the club – a squad reaching the end of its cycle and hurting from a Champions League final loss, £100million of signings failing to fire and a host of injury problems to key players.

"So enough things, enough motivation to fight."

Having seen their team challenge for the Premier League title and reach a Champions League final under Pochettino, Spurs fans are understandably disturbed about their current plight.

Chairman Daniel Levy is the constant target of criticism for not backing the team in the transfer window, but Mourinho pointed to last summer where the club spent over £100m.

"The only thing that I feel is quite an injustice is to forget that the best stadium in the world is there, the best training ground in the world is here, and around £100m investment in the summer," he said. "If I'm not wrong that was probably one of the biggest investments by a Premier League club (that) is considered quite not committed with evolution or not committed with an investment. £100million.

"Then you can discuss good, bad, successful, not successful. You can discuss all these things.

"But nobody can discuss that around £100m was on the table in the last summer which I think is proof, open proof, that the club wanted to invest."