That takes an immense amount of fuel. We orbit the sun at 30 km/s, of which you have to cancel about 24 km/s to actually hit it. This is after escaping Earth’s atmosphere (another 11 km/s of delta V) and effective sphere of influence which takes even more fuel. We could use some gravity assists off the moon and inner planets to get there, but even then it’s not really economical. Our best bet would be to send him out super far using ~9 km/s of dV, and then use a very small amount to cancel out any remaining angular momentum and let him slowly fall into the sun. Unfortunately, as with all efficient space maneuvers, you pay for them in time, and this maneuver would take you 3 years. We’d have to somehow support the little bastard all that time but it might just be doable.