Nowadays, it's hard to find an ineresting coppermine (Area). There is a near term shortage on copper. One day, depending on the Teck's criteria and markt conditions (f.e. copperprice) Teck will take Shaft creek into production. If copperfox don't have that patentience a major will. A major can buy a 25% on Shaft Creek with the knowledge that, one day, it will be an active mine. As far as i know, nothing can stop a major from buying the 25% on SC and CF is, as far as i know, free to sell their 25%. So, it might be interesting, if they have the patience and money, to buy or only the 25% of SC or the 100% of CF. CF will like this, but Teck won't like it, cause they rather choose their own partner. So, in my opinion, finding a major who might be interested in the 25% or the 100% of CF will put pressure on Teck and so interesting for the negotiations.

The benefit for a major is to get a 25% stake in SC, an interesting copper mine. Their ROI might be very interesting when it goes into production. Or they sell it, when the production moment is there, at Teck again.

A 100% buy out of CF is also interesting for a major. They earn a 25% of SC, with the benefits as noted above, and they have a large stake(45%?) in Carmax, also an interesting mine (area), and a 100% stake in van Dyke.