Serbian defender Neven Markovic has led to speculation about his future after tweeting a picture of himself wearing a Watford training kit, along with the words: “Fantastic day with new teammates”.

The Watford Observer has spoken to Hornets officials tonight but it is not yet clear whether the player is visiting, on trial, or indeed if the club would be allowed to sign him if they wished to under the terms of the transfer embargo imposed following a Football Disciplinary Commission’s ruling on Monday which saw former owner Laurence Bassini banned from any involvement in football for three years.

Markovic is a free agent, having left Major League Soccer side Sporting Kansas City in November after making just two appearances.

He started his career at FK Rad Belgrade but sources suggest he has only made a handful of appearances at each club he has been at since.