Regardless of his anti-city/ pep bias , he has been good with City's transfer and from what i have heard works for Mendez in some capacity - with Mendez being Felix's agent
From the article
Begiristian is concerned enough to have told friends that he may be forced to sell this summer. The calculation is relatively simple - if it becomes clear that Sane’s valuation of himself in terms of demands for salary and greater playing time are too great to be met, City should cash in on the player while they have two years’ of contract with which to secure the highest transfer fee.
The takings from a sale - and in the current market for young, elite forwards these would be substantial - will be invested in a replacement. Prominent amongst the candidates Begiristain is working on is Benfica’s teenage forward Joao Felix.