Porto striker Jackson Martinez is in talks over a Premier League move.
The Daily Star Sunday says Arsenal and Manchester United have already held preliminary talks with the representatives of the Porto and Colombia forward.
Atletico Madrid, Inter Milan and Roma are also understood to have held discussions over a deal for Martinez.
And the 27-year-old, who has two years remaining on his current deal at Porto, admits that his future is currently up in the air.
"I do not know what will happen," he told radio station La FM. "I have a contract for two more years with Porto and I know there is interest from several clubs.
"It's normal if a player is playing well, but I have always respected my contracts.
"Only time will tell what will happen."
