As a general rule, in the Semi-Slav it's never too bad if you just play b6, Bb7, and so on, even in worse situations than this.
1. d2d4  1... d7d5  2. c2c4  2... c7c6  3. g1f3  3... g8f6  4. b1c3  4... e7e6  5. e2e3  5... b8d7  6. f1e2 This is a fashionable move. How can the bishop be better developed on e2 than on d3 $2 The idea is that after Black's dxc4, White is not forced to capture. 6... f8d6  7. b2b3 