Mauricio Pochettino expects Tottenham to respond from the loss to Leicester when Sunderland visit White Hart Lane tomorrow.
Spurs conceded a late Robert Huth goal to fall seven points behind the Foxes and Arsenal in fourth place in the Premier League.
Pochettino, who again reiterated striker Harry Kane is not for sale, said: “We missed a great opportunity to establish us on the top and you feel disappointed, but you need to carry on and keep working hard.”
Spurs spurned opportunities and Pochettino remains in search of a striker to ease the burden on Kane.
Kane was recently linked with a move to Real Madrid, who yesterday, along with city rivals Atletico, were hit by a FIFA ban on incoming players in the next two complete transfer windows.
Real, banned over transfers involving under-18s, can sign players this month, but Kane will not be among them.
“Harry Kane is not for sale,” added Pochettino, who is looking for a player to complement the talents of his talisman.
“We cannot change after one result our plan and our view about our squad.
“I’ve explained a lot of times that if we find the right profile and the player that can improve our squad, we work hard for that.
“If we can add some player, we are open [to it].”
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