The 22-year-old striker signed for the AFAS stadium outfit last summer and enjoyed a phenomenal maiden Eredivisie campaign, finishing up as the division’s top scorer with 27 goals in 34 appearances.
Tottenham have been linked with the Netherlands international, who now boasts three goals and five caps for his country, frequently in the build-up to the summer window.
In fact, they’re believed to have already seen a bid rejected for Janssen, who has been billed as a much-needed support act to Harry Kane – having started all 38 of Spurs’ Premier League fixtures last season.
And according to Voetball International, AZ are willing to part with their prodigious centre-forward, provided a summer suitor tables a bid between the £12.3million and £16.5million mark.
Mauricio Pochettino is preparing for his first season in the Champions League since taking the White Hart Lane hot seat in summer 2014 and is expected to bolster his squad accordingly.