With the network upfront presentations that will determine the 2010-2011 TV seasons coming up, it seems two CBS shows could switch networks while an NBC fan favorite could be locked for a fourth season. Deadline TV is reporting that two CBS shows - Ghost Whisperer and The New Adventures of Old Christine - could land at ABC if they are canceled by CBS.

It was said that this will be the third year in a row that ABC has offered to pick up The New Adventures of Old Christine, which stars Julia Louis-Dreyfus, but now it seems the network is in a better position to pair the show up with a similar family comedy, their freshman hit series The Middle, which stars Patricia Heaton and Neil Flynn, since both series' are similar family comedies. It was also said that Ghost Whisperer could also move to ABC, but CBS hasn't fully decided on what to do with its Friday night lineup thus far.

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The site also reported that NBC's Chuck, which was saved last year due in part to a promotional deal with the Subway food chain, could be renewed as early as this week. It was said that creators Josh Schwartz and Chris Fedak have pitched their Season 4 vision to the network and, with the show's ratings on the rise, it was said that if tonight's episode performs nicely, that could seal the deal for a fourth-season renewal.

On the CW Network, it was said that veteran series One Tree Hill and new series Life UneXpected, which are both on the bubble for renewal, could end up getting partial orders and sharing the same timeslot.