Gareth Bale, Sergio Reguillon, Matt Doherty and Pierre-Emile Hojbjerg. It's not been a quiet window for Tottenham Hotspur and they appear to not be finished yet as the club eye another exciting addition...

What's the word?

According to Dan Kilpatrick at the Evening Standard, Spurs are interested in signing Benfica colossus Ruben Dias to bolster Jose Mourinho's backline, though they face several obstacles.

It's claimed that the north Londoners need to sell a couple of players on before they can clinch a new centre-back with the likes of Danny Rose and Juan Foyth on the chopping block this summer.

Football.London's Rob Guest believes Mourinho is a "big fan" of the 23-year-old whilst his €100m (£91.5m) release clause is thought to be 'negotiable' as per reports in Portugal.

He's valued at £31.5m by Transfermarkt.

Masterclass?

With Jan Vertonghen leaving Spurs for the Primeira Liga giants, a move for his current teammate Dias could make a lot of sense, though they'll have to come to an agreement over a fee.

If they can, then this could be an absolute masterclass by chief scout Steve Hitchen as the 19-cap Portugal international is everything Mourinho needs in defence.

His side ranked second-worst in the Premier League for goals conceded last season and both Eric Dier and Davinson Sanchez cannot find any consistency when given the opportunity.

Dias is thought to be in a similar mould to Juventus' Matthijs de Ligt as well as fellow transfer target Milan Skriniar, so if Spurs can't secure the Inter Milan star, then he's surely the perfect alternative.

The 23-year-old is described as an "impressively robust" defender with "significant potential" and that much has been seen with his performances in Portugal.

Per WhoScored, the 6 foot 2 powerhouse averaged 3.1 clearances, 2.6 aerials won and 1.3 tackles per game, and even contributed to four goals in 33 starts, via WhoScored.

Daniel Levy can secure the final piece of the defensive puzzle after some expert scouting from Hitchen. Dias must be signed at all costs this summer.

AND in other news, Spurs to meet with wantaway Serie A star as Levy eyes £18m swoop...