Central midfield is a position at Manchester United that even the great Sir Alex Ferguson was often accused of neglecting during his latter years at Old Trafford.
While it could certainly be argued that there are several areas of the squad that are currently in dire need of strengthening to ensure that the Red Devils are able to arrest their current slump and propel themselves back into the title race next season, the midfield perhaps requires the most attention.
In particular, David Moyes is evidently desperate for a talented all-round midfielder - a classic central player with quality technical attributes who also possesses the drive and the engine to operate from box-to-box.
In my opinion, one of these moves is far more realistic for Manchester United than the other.
While Chilean international Vidal is a hugely impressive talent, Juve's dominant status as Serie A champions and his lucrative new deal in Turin suggests that he would be another unattainable target that Moyes would just be wasting his time lusting after.
Rather, I believe that the Manchester United boss should take a gamble and pursue Gundogan this summer.
With Dortmund trailing both Bayern Munich and Sami Hyypia's Bayer Leverkusen in the Bundesliga and the team set to lose their most influential striker in Robert Lewandowski this summer, surely Gundogan is far more likely to leave his current employers.
Another added advantage to Manchester United chasing Gundogan is the relatively clear run that they may now have.
Although Spanish giants Real Madrid were previously thought to hold a verbal agreement to sign German, it has been suggested that the the La Liga giants are instead keen to mount a move for Vidal.
In which case, Manchester United should to Real a favour and let them go after Vidal unchallenged. In return, they will surely be hugely advantaged in their own pursuit of Gundogan.
The only risk that would appear to be involved with Gundogan - aside from him perhaps potentially being persuaded to extend his stay at Signal Iduna Park - is the fact that he has been sidelined since August with a serious back injury.
Such a lengthy period on the sidelines - Gundogan has made just one solitary appearance in the Bundesliga this season - is likely to make many deem such a move as a gamble.
However, once he has sufficiently recovered from such a setback, Gundogan would instantly become one of Manchester United's best and most-complete players.
He is attainable and Moyes should do everything possible to get him. This will be the kind of potential deal that will define just whether or not the club are serious about embarking upon an almost unprecedented spending spree this summer.
£25 million is the valuation that has been touted in the media for Gundogan's services - a fee that you wouldn't think would put him out of Manchester United's price-range.