The 20-year old Austrian is up against Darren Bent, Gabriel Agbonlahor and Nathan Delfouneso in Paul Lambert's squad but says he is happy for the competition even if a new striker is purchased this summer.
"There's myself Gabby, Darren and Nathan now that Emile [Heskey] has gone," Weimann told the Birmingham Mail.
"I think for myself it doesn't really matter if a new boy comes in because I've still got to be at my best in pre-season to show the gaffer what I can do.
"If he thinks I'm good enough to play then I'll play. Obviously, if a new striker comes in it is good for the competition, but for myself I've got to be more concerned about showing the gaffer what I can do myself.
"If I impress I'll play, if I don't I won't. Everyone starts with a clean slate because it's a new manager and if I do well in training I'm sure I'll get my chances.
"I got the taste for it last season, I want to hopefully get a few chances next season by showing the new gaffer in pre-season what I can do."