Watford are eyeing Akhmat Grozny fullback Milad Mohammadi.
The Sun says the Hornets are interested in Iran fullback Mohammadi.
The 25-year-old starred at the World Cup with a failed somersault throw-in.
He is available on a free transfer at the end of the season when his deal expires at Akhmat Grozny in Russia.
Javi Gracia is leading the chase for the left-back, who can also play as a winger.
Celtic are also tracking Mohammadi and are looking to bring him to Scotland.
There is also expected to be competition from Turkish giants Fenerbahce.