If we're looking for a right wing forward that can also play as the centre forward in our system then I think we're really going to struggle to find anyone. Personally, in the medium to long term, I think we'd be much better off signing competition for the number 9 role (Delap from Ipswich would be my number one choice by a long way here) and then also signing a new right winger.
Assuming we don't have mega money to spend and still need to strengthen a few areas of the team and squad here are a couple of right wing options that might work....
Johan Bakayoko - 21 year old Belgian winger at PSV, fast, skillful, beats players, creates goals and scores goals. Looks to me as though he'd have no problem handling the physicality of English football. Think he'd cost at least £40m though.
Alternatively a cheaper option would be Edon Zhegrova - a 25 year old Kosovan at Lille, very good at beating players 1 v 1, probably gettable for £20m.
If looking to the championship then the best right winger is probably Wilfried Gnoto at Leeds. Though with Leeds chasing promotion I doubt anything other than an over the top bid would get him.