I got rid of Slimani so my front three is currently Lukaku, Rooney, and Giroud. I'd read a few things indicating that Leicester might move to a 433 with Vardy starting and Slimani on the bench so I decided to get rid while Giroud was available.
I had initially picked up Rooney because I thought that he'd bag a decent amount of goals and take all set-pieces but with Sigurdsson signing for Everton he'll probably take all free kicks and corners now, maybe even penalties too. Might get rid of him too if someone good becomes available.
Thankfully I have Lukaku, who will be a reliable source of goals.