Make bots not spawn near player Unity3D

Question

I'm making top down shooter game! Every 3-5second enemies spawn in random positions. I've managed this with Random.Range and pixels. But sometimes enemies spawn near the player or at exact position. Is there any way to make bots not spawn near the player? This problem is very critical for my project because if enemy even touches the player, game is over. Here's my script:

IEnumerator SpawnNext()
{
    float randX = Random.Range(-8.638889f, 8.638889f);
    float randY = Random.Range(-4.5f, 4.75f);
    GameObject plt = Instantiate(enemy);
    plt.transform.position = new Vector3(randX, randY, 0);
    yield return new WaitForSeconds(1f);
}