It is a fairly common occurrence in the cosmopolitan world of modern football for managers to accumulate a number of players of the same nationality.
Having familiar voices in the dressing room can be a big help in helping the settling-in and integration process while also aiding on-pitch understanding, the great AC Milan and Inter Milan sides of the late 1980s which featured stellar trios from Holland (Gullet, Van Basten and Rijkaard) and Germany (Matthaus, Klinsmann and Brehme) respectively being a prime example.
Jurgen Klopp during his seven years at Liverpool may so far have only brought in one player - goalkeeper Loris Karius - from his native Germany having inherited Emre Can but his overseas predecessors in the Anfield hotseat, Gerard Houllier and Rafa Benitez, both regularly tapped up contacts in their home countries to sign players throughout their time in charge.