Sphere spawn from border in direction (2D)

Hello, I have question about sphere spawning.

I have player object in centre of camera (green dot in image), I need to spawn enemies from blue border in image, that will have random direction "nearly" (sometime directly) to player by rigidbody2d.AddForce

I also have rotation of enemy

 rigidbody2d.angularVelocity = Random.Range(-1.0f, 1.0f) * tumble;

I need that he will keep rotate and this random direction

How I can do that? Thank you!