I've toyed around with Swansea plenty, though I haven't gone too far with a game. Bony being gone tempers my interst in them a bit, even with more money to spend. They don't have a lot of overt weaknesses, though it depends on your formation. I typically look to upgrade at one fullback spot and add depth players with potential elsewhere. Some nice options will be gone due to the transfer updates, such as Lewis Macleod, Joshua Kimmich, etc.
Gomis is a pretty solid Prem-level strilker. Oliveira is also pretty solid. Getting a striker that is clearly better than both is gonna be pricey and soak up most of your money. You can spend a chunk of it on a guy who will develop into a better striker. Carlos Torres, Cauley Woodrow, Carlos Strandberg.... Sebastian Giovinco is an interesting option but I doubt he will wnat to come to Swansea. Wilson from United on loan could be an option. For the most part, just don't expect guys who will take the Prem by storm in the first season.
For DM/CM, the options are many. Obvious ones like Lucas Romero, Gaston Gil Romero, and the like. They will eat up a chunk of your transfer budget, but are capable of starting at the Prem level. Will Hughes, Deli Alli, Simon Gustafson, Adam Vass, Pavelka,
Kris Ajer, John Hou Saeter, Lundermo, so many more. Really depends on what kind of player you want - versatile, specialist, etc - and whether you want a prospect or a ready-made player who won't grow much more. You do have a couple of MC prospects in the reserves.
Winger depth is definitely a weaker area for the side. Nice thing about wingers is that there are plenty of forwards who can be used there to great effect if you run them as inside forwards. That opens up the options, but it depends on what you want out of them. Just a few to look at: Pavel Savitskiy, Adema Traore (on loan), Pione Sisto, Patrick Roberts (really nice option), Ould-Chihk... The club starts with 3 solid wingers so trying to spend all your money on one "instant impact" player isn't necessary.
Loads of great suggestions in teh last few pages of Uncle Mad's....
http://www.fm-base.co.uk/forum/foot...-ask-uncle-mad-uncle-mads-box-choccys-10.html