The 27-year-old moved to Stamford Bridge from Newcastle in January and has had to fight over a starting berth with £50 million man Fernando Torres, while the Blues are known to be long-term admirers of Atletico Madrid striker Radamel Falcao.
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And with Romelu Lukaku impressing while on loan at West Brom, there will likely be fiercer competition for places in West London for 2013-14, but the Senagal striker says he is unconcerned.
"Everywhere you go, [competition] is there. It will always exist. I'm at one of Europe's biggest clubs," he told reporters.
"Each year, they're going to bring in a striker, that's part of football.
"It's what makes you better if you take it the right way. I work, I know what I can achieve.
"If they buy a new forward, it'll help me improve. I won't let myself be pushed around."
Chelsea take on Sparta Prague in the Europa League on Thursday, but will be without Ba who is cup-tied after previously featuring in the competition for Newcastle.