Mauricio Pochettino has a lot of work to do at Tottenham this summer, if he is to guide his side to their first major trophy since their League Cup win in 2008.
One particular area where the Argentine will want to strengthen is his central midfield department, with Mousa Dembele's future in north London far from certain.
The 22-year-old joined Dortmund from 1860 Munich in the summer of 2015, and he has gone on to establish himself as one of the Bundesliga's best holding midfielders.
Weigl has gone on to make 127 appearances for Dortmund, displaying a certain level of maturity that defies his tender years, as well as exceptional technical ability when in possession of the football.
The Germany international would fit perfectly into Pochettino's system at Tottenham, and would be the ideal long-term successor to Mousa Dembele in the heart of the Spurs engine room.
According to German publication Bild, Dortmund would be willing to sell Weigl for €50 million (£44 million), and in today's day and age, that would actually represent good value for money for Spurs.
The 22-year-old would add a touch of class combined with experienced discipline to Tottenham's setup, and Pochettino should prioritise the signing of the German over everything else this summer.