Dianavan, it's not Sudan who refused troops. It is the African Union, which includes Egypt, Libya, Chad, Nigeria, Sudan, Gabon and Eritrea. I doubt that "troops" means the same thing as "intelligence officers and strategic planners". They can have all of those kinds of help stationed outside of Sudan while not using any of the actual troops (soldiers with guns) on the ground in Sudan.

If I were to try to guess about why they would want it this way, it would be that they are trying to establish some sovereignty within the African Union. Since there is a lot of oil in question, perhaps they want to make sure Sudan doesn't become another Iraq or Afghanistan, in which sovereignty exists only on paper, while the US and other countries are really in charge.

If you haven't already, I suggest reading the articles I posted links to. They do show that the African Union is not only accepting logistical and material help, they are actively seeking it out. And Canada is not the only country that is offering help. Nato and the European Union are also offering help.