Roma and Inter face competition from Arsenal in the race for FC Porto and Mexico international Hector Herrera.
The 28-year-old’s contract is running down, which would significantly lower his €40m price-tag.
In Serie A, he is of interest to Roma and Inter, while Real Madrid, Barcelona and Paris Saint-Germain are monitoring the situation.
According to the Daily Mirror newspaper, Arsenal have now joined the race for the man with 70 senior caps for Mexico.
His contract with Porto will expire in June 2019 and these clubs are all planning January offers.
Watch Serie A live in the UK on Premier Sports for just £9.99 per month including live LaLiga, Eredivisie, Scottish Cup Football and more. Visit: https://www.premiersports.com/subscribenow