The boss wants more from his side following defeat to the Daggers on Saturday.
Southend United manager Phil Brown believes his side are 'five or ten percent' away from being ready for League 1 football following the 2-1 defeat at Dagenham & Redbridge at Victoria Road.
The game against the east Londoners began well for the Blues, with Michael Timlin giving Brown's men the lead mid-way through the first half. However, a Matt McClure brace earned the victory for Wayne Burnett's side.
And Brown admitted afterwards that his side weren't up to their usual standard.
“It was glaringly obvious where we're short,” the boss said.
“We're not quite there yet and are 5% or 10% short of our game. Fair play to Dagenham today for coming back to win. We had a few chances to win the match and we'll be ready for 8th August.
“There'll be two or three new faces come that date. Possibly four, we'll have to wait and see.
“There were times we went through the gears and looked a decent side, but we haven't got that clean sheet mentality yet or in front of goal – which is the business end of the pitch.”
And Brown was disappointed with the 'uncharacteristic' nature of the way the goals were conceded on Saturday.
“They weren't the best goals in the world to concede – they were uncharacteristic goals for us to give away,” he said.
“We know that the 23rd May is gone now and we need a bit more quality in the camp.
“I might have a little sniff at the trialists against Charlton on Tuesday. Danny Galbraith did okay but he may need to work on things defensively. He's still behind on fitness things at this moment in time.
“We've been committed again today – Adam Barrett's in hospital with a head injury and Michael Timlin's eye has opened up again. We don't seem to have that clean sheet mentality yet. We need to get that mentality back as soon as possible.”