Vincent Janssen
Vincent Janssen has expressed his eagerness to join Tottenham Hotspur this summerGetty Images

AZ Alkmaar striker Vincent Janssen has expressed his considerable frustration at the slow progress surrounding a proposed summer move to Tottenham Hotspur. The prolific Dutchman has been the subject of sustained interest and multiple offers from Spurs over recent weeks, although technical director Max Huiberts recently suggested that their latest bid – believed to be worth €14m spread over three years – fell some way short of the valuation.

He later denied reports that he had publicly established an asking price for Janssen, who arrived at AFAS Stadion from second-tier side Almere City for just £500,000 last summer and finished his debut Eredivisie campaign as the league's top scorer with a superb record of 27 goals in 34 appearances.

Bundesliga outfit Wolfsburg have already established themselves as Tottenham's key rivals in this particular transfer race, while reigning French champions Paris Saint-Germain, who recently replaced manager Laurent Blanc with three-time Europa League winner Unai Emery, were also credited with an interest as they seek to compensate for the considerable loss of talisman Zlatan Ibrahimovic.

Huiberts claimed not to have heard anything at all from PSG, however, and the player himself appears set on a switch to White Hart Lane.

"I have expressed my choice at the club," he was quoted as saying by Sky Sports. "Tottenham Hotspur have made a high bid in my eyes. There has been an offer around €18m (£14.9m), but AZ will not even come to the table.

"I would like somewhere else as soon as possible to start my preparation. This is frustrating. I indicated that I would take the next step and want to get away from the club. They know [this] and are aware of [the situation].

"It's a shame, I would have wished that it would go a little faster. Sure it's fine to train again. AZ is a fantastic club, but I want to make that next step for my development. Ultimately I hope to shake people's hands here and walk out of the door on good terms."

Harry Kane
Kane led Tottenham's title challenge with 25 goals in attack.Getty Images

As well as enjoying a remarkably swift rise to prominence at club level, 22-year-old Janssen has also made an impressive start to his international career during a particularly bleak period for the Netherlands that saw them inexplicably miss out on qualification for Euro 2016 despite the tournament being expanded to 24 teams. The former Feyenoord youth product netted from the penalty spot on his first senior start for the Oranje during their 2-1 win over England at Wembley in March and has subsequently notched in friendlies against both Austria and Poland.

Tottenham have already made one signing so far this summer, with Southampton's tough-tackling Kenyan midfielder Victor Wanyama reuniting with former Saints boss Mauricio Pochettino in a deal worth approximately £11m. The signing of a talented forward such as Janssen would help provide necessary competition and support for Harry Kane.