Redknapp says he is now happy with his forwards as the South Coast club are set to compete in Europe for the first time in their 120-year history - but is keen to strengthen the side's ageing defence.
Redknapp said: "We are always looking to improve and we will see where we go - we keep looking around.
"If you are competing in the UEFA Cup as well, there are a lot of matches. We need strength in depth.
"You can end up playing every Thursday and Sunday and players are going to get injured or need a rest at some stage.
"There are a few positions we need strengthening and Peter (Storrie, chief executive) will be seeing what we can do."