I wouldn't be adverse to giving Fellaini a proper go in centre mid with a more mobile player beside him. Looks likely we'll be getting Shaw at left back plus we have Evra.
At right back we are well stocked with hopefully Rafael (needs to show he can stay fit) if not then Valencia or Jones.
I agree we could improve on certain positions like the wings but we do have Valencia Nani Adnan Young Mata Welbeck Kagawa to play in these attacking positions so we are not starved of choice.
The centre back area will look better with a proper midfield in front of it imo. We are more than capable of finishing top 4 without even buying signing 2 a left back and a centre mid should more than guarantee it.
Relying on Fellaini or expecting vast improvement from him next season, considering the philosophy LVG will look to implement along with the performances he has produced thus far would be naivety of the highest order. Significant investment in midfield has been long-overdue and it's imperative we amend that deficiency in the form of two midfielders this summer.
Left back will be addressed of course and ironically it could be one of our strongest areas heading into the new season. I expect a revitalised Evra, due to him not having to play in excess of forty games a season. Shaw will offer longevity and quality in that position for the next twelve years or so.
Admittedly, right back cover isn't a pressing matter. It certainly isn't necessary to address that externally, when we can look within the U21's at Varela. Rafael picks up too many injuries - many sustained of his own accord - and Jones and Valencia aren't players I wouldn't describe as 'viable options' there, particularly the latter. So with that in mind, it's something that wouldn't go amiss, although hopefully Varela can prove himself capable.
And you've merely listed every possibly attacking player in the offensive or wide midfield positions, despite some having produced next to nothing for us in recent seasons. The only players I'm confident with are Mata, Kagawa, Welbeck and Januzaj. Our three conventional wide men are non-entities in my opinion, so I do think it's vital we add a goal-scoring winger to our ranks.
In centre back, I have the utmost faith in our defenders fulfilling their potential - Smalling in particular -
if used correctly. But all three have injury issues, so in that sense it would be wise to recruit another centre back.
I must admit, I am staggered at the amount of people who think we will waltz top four if we simply sign in critical areas. So many people are severely underestimating the competition and it's as if they dismiss the notion of those sides significantly improving their sides also.
I think we will be embroiled in a top four fight, but we have to sign quality in a number of areas. Signing just the two players wouldn't suffice, European football or not.