But with the transfer deadline less than three weeks away, Ramos has said he is happy with preparations for the new season, although he remains keen to add to a squad that could start their campaign with Bent as the only experienced out-and-out striker.
"We are aware there are only two weeks to go before the end of the (deadline), that is something we are working constantly on," he said.
"We are working calmly, in the background, on one or two things. We prefer to work with as much discretion as we can."
He's an excellent pro, he's been working totally independently to anything that might be happening outside the football
Juande Ramos on Berbatov
Ramos added that, should the speculation surrounding Berbatov refuse to die down, he could leave the player out of the squad to face Middlesbrough on Saturday, though he was at pains to praise the striker's professionalism during the saga.
"I will wait until the final training session and see how he is in training, that's when I will make a decision on that," he said.
"He's an excellent pro, he's been working totally independently to anything that might be happening outside the football.
"He's just been getting on with things professionally in training."
Ramos has bolstered his attacking ranks this summer by signing Giovani dos Santos, who can play as a support striker, and attacking midfielders Luka Modric and David Bentley.
However, it is the form of Bent that has been particularly noteworthy.
The striker struggled last season following a £16.5m move from Charlton, hitting just six premier League goals and making only 11 league starts.
However, he has scored 11 times in a prolific pre-season and impressed in grabbing a brace against Roma on Monday.
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