I know absolutely nothing whatsoever about Spanish football so there's no point in me pontificating on Lorente or the other bloke.
A couple of things though are interesting in this debate. Firstly, the learning process for us which has been this season. We have attempted to go through the second half of the season with only one recognised striker, and as experiments go it hasn't been that successful. No sooner had we embarked on our journey than both Torres and Gerrard sustained injuries, and in truth it has never really come off. Torres missing against Newcastle was no big deal, but if we hadn't been put out of the Champions League by Chelsea his absense this week would have been. Keanegate and the surrounding issues will crop us many times in the ensuing debate should Manchester United avoid falling flat on their face at the last fence. I can only hope that like mass rotation from game one, and setting up more positively to win matches even if it means risking losing them, we have taken the knowledge, learned from our mistakes and will apply both next season.
As somebody mentioned earlier too, each time I see Arshavin playing for Arsenal I can't help thinking what might have been. He can play up top in Torres's role, he could certainly play in Gerrard's role, and he can fairly obviously play wide left as he scored four times against us from there. At a price somewhere between 11-15 million depending on which report you read, you have to wonder why we weren't in for him (and if we were why we din't make sure we got him). Arguably, we need him far more than Arsenal do and even the usual 'with the benefit of hinmdsight' riders don't apply in his case, as half the forum was on about him for eighteen months previously.
As for who we need/could do with, like RBG I'll keep my targets in England, in my case because that's the only football I know anything about. as I've said many times Robin Van Persie would be my number one choice as he is young, top-class, and can play either in Gerrards role, Torres's role or out wide. I think he'd cost betwen 15-22 million. My second choice and a fairly close second at that would be Nicolas Annelka. Once more he can play up top, in behind or out wide. My guess is with a new manager coming in at Chelsea, there's a chance you'd get him for 12-15. Third choice woud be Tevez who doesn't offer as much versatitily (or at least he doesn't until he's had two months of being an "option" under Rafa) but he is a quality player. 20-25 mill I think for him. If the coffers are nowhere near as deep as that, I really like Tuncay at Middlesboro. Once they've gone down and his "I love the club" has turned into "let me out of here" I think you'll get him for between 8-12 mill. If the coffers are shallower than that, Martins from the barcodes at 7-10 mill. Shallower than that, Cisse on a free, or Owen.