After colliding move the object back by the same circle trajectory

Hi, guys. I am stuck with one feature and I have no idea how I can make it further. Would be much appreciated for the help or a hint. So the point is, when the green ball(see attached screenshot) will collide with the racket, I want the ball to move backward(by the same trajectory). The ball and the racket have both defined Circle Colliders 2D.

Here is the code for my ball logic:

  public class BallMovement : MonoBehaviour {
     
         private float RotateSpeed=1.3f;
             private float Radius = 1.4f;
     
             private Vector2 _centre;
             private float _angle;
             private Vector2 offset;
     
         void Start()
         {
             _centre = transform.position;
         }
     
         void Update()
         {
           
             _angle += Time.deltaTime * RotateSpeed;
     
     offset = new Vector2 (-Mathf.Cos (_angle), Mathf.Sin (_angle)) * Radius;
     
             transform.position = _centre + offset;
     
             RotateSpeed+=acceleration;
             if(RotateSpeed>maxSpeed){
                 RotateSpeed=maxSpeed;
         }
     
         void OnTriggerEnter2D(Collider2D other) {
             if (other.gameObject.CompareTag("Racket")) {
 
 // I thought I could make it in this way, but it is not working. And I think it is not the best approach at all            
     offset = new Vector2 (-Mathf.Cos (_angle), -Mathf.Sin (_angle)) * Radius;
             } 
         }
     }

   

I attach here the screeshot for better visual understanding.

Thanks.