A new defender is on Pochettino's agenda and Sanchez emerged as a prime target late last week with widespread reports suggesting Tottenham were in talks for the Colombian global.
Sanchez's versatility can also help strengthen Pochettino's back line since the defender is adept at playing as a centre-back and a right-back.
Celebrity Big Brother 2017: Sarah Harding's 'boyfriend' should look away now
Johnson says "maybe they didn't see it", as Harding heads off into the storeroom, head in hands, saying "I'm so screwed". She appeared to regret her decision when she posted a tearful message on YouTube shortly after she left the house.
The switch to Ajax has seen Sanchez develop his game further.
His performances for Ajax also got him into the Colombia setup, and he made his debut for their senior national team in 2016.
The Spurs manager has been criticized for a good chunk of this summer due to his inability in making quality additions to the first team.
Pochettino has worked between a number of different formations and has fielded both a back four and three centre-halves over the last 12 months.
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Sjors van Veen, who is an increasingly renowned source of transfer news regarding Holland-based players, claimed on his personal Twitter account on Saturday evening that it is a "done deal" for Sanchez to join Spurs.
Kyle Walker was sold earlier this summer and a new right-back is believed to be a priority for Tottenham, with Eric Dier or Kyle Walker-Peters seemingly set to operate in the role this weekend.
Tottenham start their Premier League campaign at Newcastle United on Sunday.
Pochettino also has an interest in Manchester United striker Anthony Martial but Tottenham have not made an offer for the France worldwide and believe he will be out of their price range.
Madarsas opposes government directive for videography of ID celebrations
Earlier in the day, the UP MSP issued a circular in this regard and asked all madrasas affiliated to it to comply with its orders. Students have been asked to sing songs on nationalism and discuss the history of August 15 and the freedom fighters.