It is fair to say Janssen hasn't quite set the Premier League alight yet but nor did Van Persie in his first season in North London.
Expectations were high when Spurs signed the strapping 22-year-old striker from AZ Alkmaar for £18.5 million, as reported by the Daily Mail, but he has looked more Matija Kezman than Ruud Van Nistelrooy so far in the Premier League.
In 12 top flight appearances, Janssen has found the back of the net just once - a spot kick against Leicester City - with his physical style of play jarring with Mauricio Pochettino’s high-tempo, one-touch attacking game plan.
However, the Dutchman has the backing of a player who knows a thing or two about scoring in the Premier League, with Van Persie offering his helping hand to his long-term successor in the national team.
“If I see Vincent Janssen play, I think, a really good striker,” the former Arsenal and Manchester United goal machine told AD.
"But I also see things in his game that I think I could help him; details, small notes and tips. If Vincent is open to it, of course.
“I myself have long played in the Premier League for eleven years. In the process, I could play a good role, I think.”
It must be remembered that Van Persie himself endured a similarly slow start to life in the Premier League, scoring just 10 goals in his first two seasons at Highbury between 2004 and 2006, with the difference in quality between the Eredivisie and arguably the most competitive league in Europe proving exceedingly difficult to come to terms with.