If the employee's performance is not up to the mark, then you need to counsel him/her and if the performance does not improve even then also then you need to terminate his/her services. By transferring an employee to another department, will your problem be solved? Are you sure that he/she will perform well?
Is the transfer to another department a ploy so that he/she submits his/her resignation automatically? If yes, then issue the Transfer Order (TO) signed by the competent authority. If the order is not complied with then issue the show cause notice and wait for his/her reply. Depending on his/her reply, you may terminate his/her services.
10th April 2019 From India, Bangalore
10th April 2019 From India, Kannur
11th April 2019 From India, Madras