My guess is they are all quoting transfermarkt.
Mahrez was announced by the club as our record signing.
As was Rodri. I can’t find the OS announcement article for Mahrez but here’s
the beeb and
sky both quoting Mahrez as our record signing.
None of that makes any sense if KDB cost more.
The club know better than transfermarkt.com
Here are some more examples of reporting contradicting transfermarkt:
Sterling -
quoted as £44m (+£5m) by the press - transfermarkt has it at £57m.
Otamendi -
quoted in the region of £34m in the press - £40m on transfermarkt.
Grealish -
quoted as £100m by everyone in the press - £105m on transfermarkt.
Rodri: £62/63m, TM: £56m
Fernandinho: £30/34m, TM: £36m
Džeko: £27m, TM: £33m
Ferrán Torres: £21m, TM: £30m
Robinho: £32.5m, TM: £39m