Mexican midfielder Hector Herrera has made a new derby on the transfer market.
Manchester United is following him for few months, but recently Liverpool joined the race for the player.
26-year-old midfielder is the leader in Porto and showed his top form in the last two years.
Former Portugal champions have indicated that they would leave Herrera leave the club only if a team pays 35 million euros.
However it remains to be seen which of the two rival teams Liverpool or Manchester United will transfer the player.
Mexican could end up in Italy, after the great interest expressed for Napoli.