Will Tottenham invest in their new problem position this summer?

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Tottenham Hotspur may need to contemplate the addition of a left-back this summer.

Tottenham Hotspur have a summer dilemma over whether or not to bring in a new left-back after Danny Rose's and Ben Davies' struggles this term.

Spurs spent £10 million on Davies in the summer, according to the Guardian, whilst they also gave Rose a new contract, but they do not appear to have fully solved their left-back problem.

Although Rose and Davies are both solid Premier League defenders, they are not the sort of players to push a team on to the next level. 

The pair appear more suited to being back-up choices, with a more capable full-back ahead of them in the selection order, and Mauricio Pochettino may feel that he needs to add another left-back to the team in the summer.

The full-backs play a crucial role in Pochettino's system. They are required to provide width and pace on the attack, whilst they also need to perform an important defensive function for the side. 

It means that Spurs' play can appear stifled if their two full-backs are not at their best, and it is crucial that whoever starts at left-back is on top form.

The problem for both Davies and Rose is that there are doubts over whether they are really the sort of players who can be regulars in a team chasing the Champions League.

Davies is strong defensively, but offers little going forward, whilst Rose, contrastingly, is an offensive threat, but he can be exposed when put on the back-foot. 

It means that the left-back position can be identified as a weak spot in Tottenham's team and, even though both are young enough to develop into stars of the future, Pochettino may be required to invest over the summer to upgrade his current line-up. 

Tottenham's priority purchases in the summer have been thought to be a centre-back, a central-midfielder and a striker, but the addition of a left-back may be a necessary one, meaning that Daniel Levy is set for a busy transfer window. 

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