"There are other clubs interested but joining West Ham would allow him to continue in London and in the Premier League and Lucas wants to continue in London".
Meanwhile, NAIJ.com had earlier reported that West Ham United have confirmed the signing of Lazio attacking midfielder Felipe Anderson for a club-record fee of a £40m.
"I'm very happy to be here at such an historic club", he told the club's official website.
The Spaniard started just two Premier League matches under former Gunners boss Arsene Wenger and only made a total of 21 appearances before being sent back to La Coruna on loan.
Sanchez's future appears to be away from Fiorentina after spending last season on loan at La Liga side Espanyol.
'I'm very happy to be here.
Arsenal have accepted a bid from Sporting Lisbon to sign Lucas Perez this summer, according to reports in the Portuguese media. 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 worldwide caps.
In a video posted a video to his Instagram story showing Perez wearing a West Ham training kit inside the dressing room.
"He has great technical quality, and can play as both the main striker or the second striker in a deeper role".
Not content with having Lucas Perez lined-up, Manuel Pellegrini is also pushing to bolster his side's midfield ranks with the addition of Fiorentina's Carlos Sanchez - who will be remembered for his previous spell at Aston Villa, where he left a lot to be desired.