How many "Zenith" and its rivals on group spent under the Champions League

"Zenith" enters the Champions League without real strengthening. It seemed, results of team in last season when blue-white-blue took the last place at a group stage with the one and only point, will set the club management thinking seriously on powerful strengthening of structure before season-2021/2022 LCh, however it turned out on the contrary. "Zenith" did not spend long ago so a little, preparing for the main Euro cup. Last summer champions of Russia redeemed from "Rostov" Dmitry Chistyakov for 3,25 million euros, according to Transfermarkt, and for the rest simply replaced on a position of the left players approximately equal on a class...