Harry Kane will cost a world-record fee.
Pochettino's team finished runner-up in the Premier League last season.
The north London team was champion Chelsea's closest challenger.
Antonio Conte's side will face reinvigorated rivals and a tough fixture list.
The Manchester United manager could spend more than £200 million, according to a report.
Spurs beat Manchester United in the last game at the ground.
Mourinho says United is only focused on Stockholm.
Chelsea could clinch the Premier League on Friday evening.
Chelsea has a four point cushion at the top of the Premier League table, with Tottenham, its opponents at Wembley on Saturday, the lone chaser for the final six games.
Chelsea faces Spurs at Wembley on Saturday.
The Chinese Super League has invested heavily in overseas players over the past two years.
Chelsea and Tottenham face off in the Premier League and FA Cup.
Janssen scored his first Premier League goal from open play on Saturday.
Chelsea will have to answer back after Spurs' latest win, a 4-0 thrashing of Bournemouth.
Trippier deputized for Kyle Walker against Watford.
The midfielder scored a superb opening goal against Watford.
Son scored twice in a 4-0 win.
Guardiola's Manchester City lost 2-1 to Chelsea on Wednesday.
Eric Dier has been linked with a move to Old Trafford.
Eric Dier is a versatile England international.
Defoe played his first international game in more than three years on Sunday.
Alli is known to be fiery footballer on the pitch.
Vincent Janssen has struggled since his summer transfer.