How badly did Rashaad Penny want to come back to Seattle? The running back confirmed Monday that he turned down a better offer elsewhere to return to the Seahawks on a one-year contract worth $5.75 million (with incentives that could take it to $6.5 million). The team officially announced the deal Monday afternoon. “This just felt like home,” Penny said in a video conference call. “I was more comfortable here. I think I got in a rhythm, in a groove, with the guys in the offense. So it was like a no-brainer for me to know where to come back to.” The former first-round pick comes back to Seattle…