Watford are the latest club to run the rule over England youngster Abdul Abdulmalik.
Teenage forward Abdulmalik is out of contract after his deal at Millwall expired last month.
The England Under 17 attacker has trained with Portsmouth since then and is now being assessed by Premier League new boys Watford.
Despite being out of contract, any club wishing to sign Abdulmalik, 18, will have to agree a compensation deal with Millwall.
They have so far dug their heels in, leaving Abdulmalik’s future uncertain, and rebuffed a number of approaches from Swansea for the youngster.