The 49ers on Monday signed tight end Derek Carrier to a two-year contract extension through the 2017 season. The deal is worth up to $3.3 million, according to a source.
The 49ers are likely to lose two of their top defensive players to retirement, according to sources.
In a stunning development, 49ers linebacker Patrick Willis is strongly considering retirement at the age of 30, according to a report and league sources.
General manager Trent Baalke strongly denied a report late Sunday night that the 49ers are seeking to trade quarterback Colin Kaepernick.