The Celtics signed Chris Johnson of the NBA Development League's Dakota Wizards to a 10-day contract.

Johnson, an intriguing shot blocker, has already been called up one other time this season on a 10-day contract with the Portland Trail Blazers.

Johnson was in the lineup for Boston in Thursday's game at Denver.

Gary Washburn of the Boston Globe reports Johnson is wearing the old No. 88 jersey of Semih Erden with a patch covering the nameplate.