Re Sakho, whatever's happened he seemingly has a long way to go now. Injured and now sent home whilst Lovren, Matip and Karius have been developing their relationship for weeks.
And Sakho does have previous with attitude. He abandoned the team once before a Merseyside derby for not getting selected; I can't ever imagine he'd try something like that under Klopp.
And re Smith, even if it's only £3m, that's still £3m more than he's worth.