Boro tried to sign the former West Ham striker in the January transfer window, but the deal fell through.
Since then we have struggled to find the back of the net, and who knows what could have been.
Harewood has struggled to secure first-team football at Villa Park and has now agreed to join Mick McCarthy's Championship leaders.
Is This The Man Who Could Have Saved Boro?
Martin O'Neill's side have inserted a recall clause into the deal for Harewood which means they can bring him back to Villa Park at any time after the first 28 days of the loan.
O'Neill confirmed on Friday night that Wolves had been in touch about securing the powerful striker's services but insisted no decision would be made until after the weekend clash at Liverpool.
Harewood did not even make the bench for the Anfield drubbing, and with Emile Heskey, John Carew, Gabriel Agbonlahor and Nathan Delfouneso ahead of him in O'Neill's plans has seen his chances limited.