Aston Villa manager Paul Lambert admits he needs to further bolster the strength of his squad.
Villa brought in nine new signings during the summer at a net outlay of £21.7million - the fifth-highest of any Barclays Premier League club during that transfer window. It took the transfer outlay of the midlands club to a net £70million during the past five seasons under owner Randy Lerner.
But Villa are still stretched in certain departments and currently have four centre-backs on the injury list in Richard Dunne, Ciaran Clark, Nathan Baker and Chris Herd. When asked about his transfer plans, Lambert said: "The squad needs to get bigger as well. That is important as well. That's normal."
He added: "Everyone has to have competition for places. That is vital.
"It is like the centre-halves situation. We lose Ciaran and Nathan and have to put Matt (Lowton) or Chris (Herd) back there.
"It shows you are short in certain areas and you have to improve the squad which we will try and do."
Lambert is convinced Villa are heading in the right direction despite winning only one of their opening nine league matches.
He said: "This was never going to happen overnight. A lot of people just expected us to come in and see a real change in fortunes.
"There is certainly progress, you can see that, but you want to keep going until you think 'we're there.'"