I think there was clearly tension there. At the beginning there wasn't a power struggle, and things worked well. As Poch became a great manager for us, he commanded more control of transfers. But he never had complete control, he never had absolute power. It worked better at the beginning imo.
It obviously worked better at the beginning, up until the summer of Sissoko & Nkoudou instead of Wijnaldum & Mane our transfer activity was pretty good - we then reigned in our spending due to the stadium build and the rest is history.