The Catalan giants continue to be linked with move for Liverpool's Philippe Coutinho and Borussia Dortmund's Ousmane Dembele as they look to fill the void created by the Brazilian's departure, something which Busquets admits has had a big impact on Barcelona.
Speaking ahead of the Spanish Super Cup second leg on Wednesday night, the midfielder said: "We try to improve the team regardless of the result of the Super Cup match.
"Those who come will be welcome. After Neymar's departure, we know that we need mostly offensive players, but we need to improve in all positions and aspects.
"With Neymar's departure evidently the team lost an attacking level, because you realise the footballer that is Neymar, there everyone will agree.
The 29-year-old also played down the notion of Barca's reliance on Lionel Messi, saying that it was normal for the team to give the Argentine the ball as much as possible given that he is the best player in the world.
"About that we have Messi-dependence, in the end when you have the best player in the world in your team you know that the more he participates the better for the team," he explained.
Is Busquets right? Do Barca have a lot of areas to improve before the transfer window slams shut in two weeks' time?