Tottenham had the most prolific attack for much of the last Premier League season.
They were eventually pipped by Manchester City but still finished as the division's second-highest scorers.
Manager Mauricio Pochettino's system relies on a three-man attacking midfield creating chances for Harry Kane while also threatening the opposition goal themselves.
The first-choice trio of Erik Lamela, Dele Alli and Christian Eriksen all enjoyed fine, prolific seasons and are unlikely to be displaced by a summer signing, but Spurs need a higher-quality reserve option.
Nacer Chadli is not of the requisite quality, Heung-Min Son is still finding his feet in English football, and Clinton Njie remains a relative unknown after an injury-wracked first season.