What we know and don't know about Tottenham's transfer window: Kroupi pursuit and Vicario exit news

Tottenham Hotspur have been extremely busy during the summer transfer window.

Spurs made some smart free transfers, with Andy Robertson and Marcos Senesi adding experience to the backline.

But then the chequebook really opened, with Jan Paul van Hecke the first through the door from Brighton in a £52million deal.

A further £85m was splashed out to bring Mateus Fernandes from West Ham, while the fee to sign Sandro Tonali from Newcastle United could reach £100m.

But Spurs' ambitious window does not appear to be over just yet, with more movement in and out expected.

Here's what we know and what we don't know about Tottenham's transfer window far.

What we know: Roberto De Zerbi has an obvious priority

Tottenham acted quickly to address issues in defence and in central midfield.

But now there is an area further up the pitch that clearly needs some work in the remainder of the window as Roberto De Zerbi adds to his ranks.

The left side of Spurs' attack looks a little devoid of options right now, while on the right and in the '10' they seem pretty well stocked.

Reports have linked Spurs with another raid on West Ham for Netherlands winger Crysencio Summerville.

Additionally, AC Milan's Portugual international Rafael Leao is also apparently on Spurs' shortlist.

Sevilla's Ruben Vargas and PSG's Ibrahim Mbaye - who usually operates on the right - have also cropped as potential targets.

What we know: Kroupi is on Spurs' radar

Eli Junior Kroupi has no shortage of suitors after a fantastic first campaign in the Premier League with Bournemouth.

The 20-year-old scored 13 goals in 33 Premier League appearances last term, impressing largely as a striker but also can play on the left.

Tottenham are said to be interested in sealing an £85m transfer, but the Cherries are adamant he is not for sale.

There is sure to be plenty of competition Spurs would have to fight off, too, with north London rivals Arsenal in the race.

It might be a tough deal to get done this summer, but Spurs have proven in this window that they are willing to show ambition to avoid a repeat of last season's embarrassing fight against relegation.

What we don't know: Will Cristian Romero be sold?

Captain Cristian Romero has a bit of an uneasy relationship with Spurs supporters at times.

Not least because he was originally not going to be in attendance for Spurs' crucial final game of the previous campaign at home to Everton.

Romero, who was injured for the finale, was originally going to be in Argentina to watch his boyhood club Belgrano play River Plate in the Argentina Primera Division Apertura final.

He eventually did return to London, but there is increasing uncertainty about his future, especially with the arrivals of Senesi and Van Hecke.

The sale of Radu Dragusin and the expected departure of Luka Vuskovic to Brighton means De Zerbi might not be overly keen on Romero leaving.

But with Real Madrid and Atletico Madrid both having been previously linked to his signature, it does not seem certain he will stay.

What we don't know: Will Guglielmo Vicario be sold?

Tottenham's goalkeeper department is one to keep an eye on in the closing weeks of the season.

Antonin Kinsky played the final seven games of the previous campaign as Guglielmo Vicario was injured.

There have been growing reports that Vicario will return to Serie A, though Juventus - who he was predominantly linked to - apparently have Emi Martinez and Zion Suzuki on their radar as well.

It was expected that Kinsky would begin the campaign as number one, but James Trafford is reportedly being monitored as he seeks an exit route from Manchester City.

Martin Dubravka has arrived on a free transfer to provide experienced back-up, but goalkeeper is a position to watch in the coming weeks.