Tottenham have held firm to their sensible transfer policy this summer. Far from being goaded in to signing the costly bigger names of European football, they have stuck to their framework.

Buy younger, talented players and spend efficiently. Pochettino and Levy have not been lured in to the extortionate sector of the market and have remained focused on players they are sure will fit their team.

The investment into the first XI so far has been rather cheap, compared to the absurd spending of many of their Premier League rivals. An eventual third-placed finish in the 2015-16 campaign became more of a disappointment than many expected it would have been and the looming prospect of Champions League football will push their squad to the very edge.

Could it be time for Spurs to spend a bit bigger? Or should the Lilywhites stick to their guns?

Well, whatever they opt to do, these THREE Napoli stars must come in to consideration...

Lorenzo Insigne

Lorenzo Insigne

With Spurs still short on natural width, a player of Insigne's style would be perfect for their squad. Although Lamela and Eriksen impress from wide areas, there is a growing feeling that the team would benefit from a couple of players who were more willing to dribble directly.

Insigne notched 12 goals and 10 assists in Serie A, as he starred alongside the brilliant Gonzalo Higuain. Able to jink through even the lowest of defensive blocks, Insigne would create chances for Spurs' strikers in a way that the squad currently struggles to.

Napoli would be unlikely to part with such a key player cheaply, mind.

Dries Mertens

Football - South Korea v Belgium - FIFA World Cup Brazil 2014 - Group H - Arena de Sao Paulo, Sao Paulo, Brazil - 26/6/14 Dries Mertens - Belgium Mandatory Credit: Action Images / Carl Recine EDITORIAL USE ONLY.

If Insigne doesn't take Tottenham's fancy, they could be lured in to bolstering their, already healthy, Belgian contingent with the signing of Dries Mertens.

More often than not, Mertens has been a bench player for Napoli and struggled to really make his mark on the team on a regular basis. However, as Spurs look to add quality depth to their squad, he could be an ideal signing this summer to provide a little extra pace and goal threat from wide areas.

Capable on playing on either wing with equal comfort, Mertens would certainly add an extra dimension to Pochettino's forward options.

Marek Hamsik

Marek Hamsik

Having starred with Slovakia at the Euros, it might finally be time for Marek Hamsik to break out of his Italian comfort zone and test himself in the Premier League.

An extremely gifted midfielder, who can play as an eight or a 10, Hamsik has great vision and a dangerous shot from range in his armoury. Whilst he would be unlikely to play alongside Dier in the midfield pivot, Hamsik would be a great signing to play just behind Harry Kane.