Sanchez, who has 88 caps for Colombia, has been a stalwart for his country for over a decade but is perhaps better known on these shores for his two-year stint at Aston Villa between 2014-16.
The new season is right around the corner and, inevitably, that means changes to the schedule will occur for every Premier League side - and West Ham have today learned that two of their fixtures in October and November have been moved for TV coverage.
However, the striker then opted to return to Deportivo on loan last season in search of more regular first-team football.
West Ham are among several clubs to have expressed an interest in Perez, who is surplus to requirements at the Emirates after the signings of Alexandre Lacazette and Pierre-Emerick Aubameyang over the last two transfer windows.
Tottenham make £25m bid to sign 22-year-old
If we are happy with our squad and can not improve our squad, sometimes it's better to keep our squad together. Alderweireld was heavily linked with a move to Manchester United but firm interest never materialised.
West Ham have confirmed the signing of Colombia global midfielder Carlos Sanchez from Fiorentina.
West Ham new boy Lucas Perez has insisted that he is very excited about joining the Hammers as it will give him the chance to continue playing in the Premier League.
West Ham have continued their £100million summer spree by signing Lucas Perez - and will swoop for "The Rock" next. West Ham director of football Mario Husillos moved for Sanchez following a ringing endorsement from the Colombian manager Jose Pekerman under whom he has reached nearly 100 global caps.
"He has great technical quality, and can play as both the main striker or the second striker in a deeper role".