No they arent.
ETH has a pedigree of winning things, so if he puts his hat on certain ex players, we trust that more than we would with Ole, who failed miserably in his only PL stint prior to joining United.
Besides, Malacia is a standalone good talent at a small fee, De Jong is a no brainer and Eriksen has proven himself in the PL. The only risky transfer looks to be Martinez given the fee. But then again he was Ajax player of the year, the manager knows him well and hes half the fee of Maguire who wasnt even as good as Evans for fecksake.