Spawn an object and move it after some seconds along the cursor point in Unity 3D - unity3d

Question

I am having a projectile object which I want to spawn and move it along the cursor direction after some seconds.
Basically if I don't wait after spawning the projectile, then the movement is working great. But since I am waiting for some seconds before I move the projectile, It actually travels backward and hitting the player.
here is the code.
void crossHairPosition(){
if (Physics.Raycast(ray, out hit, 100f, layer_Mask))
{
Debug.DrawLine(firePoint.position, hit.point, Color.green);
destination = hit.point;
crossHairPrefab.transform.position = ray.GetPoint(10);
crossHairPrefab.transform.LookAt(Camera.main.transform);
}
else {
destination = ray.GetPoint(1000);
}
}
void spawnProjectile(){
projectile=Instantiate(projectileObj,player.transform.position,Quaternion.identity);
StartCoroutine(waitforseconds(2));
}
IEnumerator waitforseconds(float time){
yield return new WaitForSeconds(time);
moveProjectile();
}
void moveProjectile(){
Vector3 difference=destination - projectile.transform.position;
float distance=difference.magnitude;
Vector3 direction=difference/distance;
direction.Normalize();
projectileObj.GetComponent<Rigidbody>().velocity = direction * 10f;
}

Answer 1

Just so the question has an answer, I'll write my comment out as a post. As there is an issue with delaying the direction calculation when firing the projectile, but no issue without a delay, cache the direction vector and pass it into the IEnumerator.
The code could look something like:
IEnumerator waitforseconds(float time)
{
// calculate the direction before the wait
Vector3 difference=destination - projectile.transform.position;
float distance=difference.magnitude;
Vector3 direction=difference/distance;
direction.Normalize();
yield return new WaitForSeconds(time);
// pass in our pre-calculated direction vector
moveProjectile(direction);
}
void moveProjectile(Vector3 direction)
{
projectileObj.GetComponent<Rigidbody>().velocity = direction * 10f;
}