Diouf, fresh from fitness and condition checks on the first day of reporting for work, took to the training pitch on his second and soon caught the manager's eye.
"We've seen in the first training session the kind of qualities he brings," Hughes told The Sentinel.
"He's sharp and likes to work off people's shoulders. These are the skills we now want to hone.
"He will give us something that we maybe haven't had before in terms of playing off the shoulder of the last man.
"Now his team-mates have got to get used to the kind of runs he can make in behind."
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