I think Newcastle can be a serious competitor for Man United in the hunt for Kim Min-Jae because there are rumours that Newcastle has a big enough budget for next season. This can be a tough transfer because when there are 2 teams that are interested in the same player, it is likely that there will be a bidding war, and it can cause transfer values to be soaring.
In addition, there is also news that Sheikh Jassim made a fifth offer to the Glazers and there are indications that it is a final offer. So if the Glazer still counteracts the offer or remains silent, most likely that Sheikh Jassim will step down in acquiring Man United.
Newcastle really needs a few additional players for next season, so they can compete with other teams in the Champions League. Rumors circulating in some media say Kim Min-Jae is also in demand by the Newcastle coach and they are also making as far a approach as possible to woo players to move to St. JamesPark. However I see a much bigger chance for Man United because so far an oral agreement has been reached between the player and the negotiating party appointed by the club.
Likewise regarding the acquisition of Man United by Sheikh Jassim and now the final offer has been made, only waiting for a decision from the Glazers who have not decided anything. If Sheikh Jassim manages to acquire Man United then for next season I think their strength will be far more terrible due to the availability of a large budget to buy several players needed by Erik Ten Hak.