By Harvey Byrne

Tottenham secured the signing of Vincent Janssen from AZ Alkmaar on Tuesday morning in an £18.8million deal that will shake up the team next season.

The striker has signed a four-year contract and has prompted speculation about where the striker will fit into the side with Harry Kane also vying for a position upfront.

The north London club are also believed to be in pole position over the possible signing of Bayern Munich’s Mario Gotze.

With defensive midfielder Victor Wanyama also brought in to the club this summer in an £11million deal from Southampton, there could be a completely different look to the Spurs line’up next season.

A number of regulars in recent seasons are suddenly vulnerable, including star men Harry Kane, Christian Eriksen and Mousa Dembele, who all featured heavily last season as Tottenham achieved a place in next year’s Champions League.

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So, who will start and who will miss out when Pochettino has his full roster of players to choose from next season?

Captain Hugo Lloris and centre-back pairing Jan Vertonghen and Toby Alderweireld are sure to keep their place in the first-team next season, but everywhere else on the pitch has multiple players competing for their position.

At Football Insider, we have picked the team we think is the best possible starting XI at White Hart Lane next season.

Wanyama and  Janssen are expected to come straight into the side and, if Spurs do capture Gotze, it is assumed that he will definitely slot straight into the line-up.

Dembel’s position is suddenly under threat and Pochettino may see Wanyama and Eric Dier as the future of Spurs’ central midfield.

The Argentine manager may also face the same problem as Roy Hodgson did this summer, as he tries to play Harry Kane with another striker up front, rather than the formation which has seen Kane lead the line on his own before Janssen joined the club.

However, it is believed that Kane may have to fall back into an attacking midfield position to accommodate the £18million striker, while sticking to Pochettino’s favoured formation.

Eriksen has also fallen out of the side after the emergence of Dele Alli last season, who finished in the Premier League PFA Team of the Year and won the PFA Young Player of the Year and the possible signing of the 2014 World Cup winner Gotze.

After impressive displays in certain matches at the European Championships Danny Rose and Kyle Walker are also expected to maintain their place as the club’s full-backs.

Although, the squad will be sure to change throughout the year, as the Spurs team will look to compete in the Premier League and improve on their third place finish while remaining competitive in the Champions League.

In other Tottenham news, Inter Milan sporting director Piero Ausilio insists that captain Mauro Icardi will not be departing the club.