"The biggest worry I've got is goals. We are an attack-minded team and if we don't take some chances that we create, then we'll struggle," the boss told the Blackpool Gazette.
"I've lost an awful lot of pace with DJ and Varney going, and we've lost a bit of trickery with Jason Puncheon, who I thought I could get back and that hasn't happened.
"Nile Ranger, another one we bid big money for, didn't even want to come and talk to us. That wasn't even close."
Holloway has been able to secure the services of veteran striker Kevin Phillips from Birmingham City. The former Sunderland centre forward scored two goals during his home debut against Peterborough United on Sunday afternoon.