The 27-year-old featured 30 times for Lazio this season, helping them to 9th place in the Serie A table.
Manchester United had been linked with the centre-back in the past, and were installed as favourites to secure his services.
However now according to the Daily Star - who cite reports in Italy - Tottenham are in the mix for his signature and could well beat the Red Devils to the punch.
Tottenham have a big summer ahead of them after a disappointing Premier League campaign - but it is expected that Manchester United will be the busier of the two after their worst league finish in the modern era.
With Louis van Gaal lined up to take charge at Old Trafford after the World Cup, the former champions could be about to splash £150 million in the summer window if reports are to be believed.
They've been linked with the likes of Luke Shaw, Toni Kroos, Arjen Robben and Mats Hummels to name but a few. Conversely Nemanja Vidic and Rio Ferdinand have already confirmed they are leaving Manchester United, while Ryan Giggs has retired to become Van Gaal's number two, and Patrice Evra could leave when his contract expires this summer.
Tottenham meanwhile won't be looking to ring the changes as readily as the Red Devils having spent in excess of £100 million on seven players last year - but are expected to lure a new striker to White Hart Lane.