Upvote:1
Depositing a sum of money into your account shortly before applying for a visa can be a red flag to an ECO. On TSE we refer to it as ‘funds parking’ UK Visa Refusal: Provenance of funds/parking and it typically leads to a refusal.
The premise of the application is that your brother will give you £3,000, not that he has already given it to you. The best approach is to provide evidence to prove your brother will and can afford to fulfil his commitment to give you the £3,000 (letter from him, plus 6 months’ bank statements and payslips) with the application and transfer it after you receive the visa.
If you decide to go ahead and transfer the money before you reapply, you must make sure that the supporting documentation you submit is watertight. My application was refused due to 'lack of evidence of funds', are there hidden requirements for UK visa applications?